TY - BOOK PY - 2008 DA - 2008// TI - Physical Activity Guidelines Advisory Committee Report PB - U.S. Department of Health and Human Services CY - Washington, DC ID - ref1 ER - TY - JOUR AU - Troiano, R. P. AU - Berrigan, D. AU - Dodd, K. W. AU - Masse, L. C. AU - Tilert, T. AU - McDowell, M. PY - 2008 DA - 2008// TI - Physical activity in the United States measured by accelerometer JO - Med Sci Sports Exerc VL - 40 UR - https://doi.org/10.1249/mss.0b013e31815a51b3 DO - 10.1249/mss.0b013e31815a51b3 ID - Troiano2008 ER - TY - STD TI - WHO Global Infobase. https://apps.who.int/infobase/Index.aspx, UR - https://apps.who.int/infobase/Index.aspx ID - ref3 ER - TY - JOUR AU - Flegal, K. M. AU - Carroll, M. D. AU - Ogden, C. L. AU - Curtin, L. R. PY - 2010 DA - 2010// TI - Prevalence and trends in obesity among US adults, 1999–2008 JO - JAMA VL - 303 UR - https://doi.org/10.1001/jama.2009.2014 DO - 10.1001/jama.2009.2014 ID - Flegal2010 ER - TY - JOUR AU - Paterson, D. H. AU - Jones, G. R. AU - Rice, C. L. PY - 2007 DA - 2007// TI - Ageing and physical activity: evidence to develop exercise recommendations for older adults JO - Can J Public Health VL - 98 ID - Paterson2007 ER - TY - BOOK PY - 2010 DA - 2010// TI - Global Recommendations on Physical Activity for Health PB - World Health Organization CY - Geneva, Switzerland ID - ref6 ER - TY - JOUR AU - Sallis, J. F. AU - Cervero, R. B. AU - Ascher, W. AU - Henderson, K. A. AU - Kraft, M. K. AU - Kerr, J. PY - 2006 DA - 2006// TI - An ecological approach to creating active living communities JO - Annu Rev Public Health VL - 27 UR - https://doi.org/10.1146/annurev.publhealth.27.021405.102100 DO - 10.1146/annurev.publhealth.27.021405.102100 ID - Sallis2006 ER - TY - JOUR AU - Sallis, J. F. AU - Glanz, K. PY - 2009 DA - 2009// TI - Physical activity and food environments: solutions to the obesity epidemic JO - Milbank Q VL - 87 UR - https://doi.org/10.1111/j.1468-0009.2009.00550.x DO - 10.1111/j.1468-0009.2009.00550.x ID - Sallis2009 ER - TY - JOUR AU - Michael, Y. L. AU - Nagel, C. L. AU - Gold, R. AU - Hillier, T. A. PY - 2014 DA - 2014// TI - Does change in the neighborhood environment prevent obesity in older women? JO - Soc Sci Med VL - 102 UR - https://doi.org/10.1016/j.socscimed.2013.11.047 DO - 10.1016/j.socscimed.2013.11.047 ID - Michael2014 ER - TY - JOUR AU - Yen, I. H. AU - Michael, Y. L. AU - Perdue, L. PY - 2009 DA - 2009// TI - Neighborhood environment in studies of health of older adults: a systematic review JO - Am J Prev Med VL - 37 UR - https://doi.org/10.1016/j.amepre.2009.06.022 DO - 10.1016/j.amepre.2009.06.022 ID - Yen2009 ER - TY - JOUR AU - Berke, E. M. AU - Koepsell, T. D. AU - Moudon, A. V. AU - Hoskins, R. E. AU - Larson, E. B. PY - 2007 DA - 2007// TI - Association of the built environment with physical activity and obesity in older persons JO - Am J Public Health VL - 97 UR - https://doi.org/10.2105/AJPH.2006.085837 DO - 10.2105/AJPH.2006.085837 ID - Berke2007 ER - TY - JOUR AU - King, W. C. AU - Belle, S. H. AU - Brach, J. S. AU - Simkin-Silverman, L. R. AU - Soska, T. AU - Kriska, A. M. PY - 2005 DA - 2005// TI - Objective measures of neighborhood environment and physical activity in older women JO - Am J Prev Med VL - 28 UR - https://doi.org/10.1016/j.amepre.2005.02.001 DO - 10.1016/j.amepre.2005.02.001 ID - King2005 ER - TY - JOUR AU - Li, F. AU - Harmer, P. A. AU - Cardinal, B. J. AU - Bosworth, M. AU - Acock, A. AU - Johnson-Shelton, D. AU - Moore, J. M. PY - 2008 DA - 2008// TI - Built environment, adiposity, and physical activity in adults aged 50–75 JO - Am J Prev Med VL - 35 UR - https://doi.org/10.1016/j.amepre.2008.03.021 DO - 10.1016/j.amepre.2008.03.021 ID - Li2008 ER - TY - JOUR AU - Van Cauwenberg, J. AU - De Bourdeaudhuij, I. AU - De Meester, F. AU - Van Dyck, D. AU - Salmon, J. AU - Clarys, P. AU - Deforche, B. PY - 2011 DA - 2011// TI - Relationship between the physical environment and physical activity in older adults: a systematic review JO - Health Place VL - 17 UR - https://doi.org/10.1016/j.healthplace.2010.11.010 DO - 10.1016/j.healthplace.2010.11.010 ID - Van Cauwenberg2011 ER - TY - JOUR AU - Feng, J. AU - Glass, T. A. AU - Curriero, F. C. AU - Stewart, W. F. AU - Schwartz, B. S. PY - 2010 DA - 2010// TI - The built environment and obesity: a systematic review of the epidemiologic evidence JO - Health Place VL - 16 UR - https://doi.org/10.1016/j.healthplace.2009.09.008 DO - 10.1016/j.healthplace.2009.09.008 ID - Feng2010 ER - TY - JOUR AU - Li, F. AU - Harmer, P. AU - Cardinal, B. J. AU - Bosworth, M. AU - Johnson-Shelton, D. PY - 2009 DA - 2009// TI - Obesity and the built environment: does the density of neighborhood fast-food outlets matter? JO - Am J Health Promot VL - 23 UR - https://doi.org/10.4278/ajhp.071214133 DO - 10.4278/ajhp.071214133 ID - Li2009 ER - TY - JOUR AU - Li, F. AU - Harmer, P. AU - Cardinal, B. J. AU - Bosworth, M. AU - Johnson-Shelton, D. AU - Moore, J. M. AU - Acock, A. AU - Vongjaturapat, N. PY - 2009 DA - 2009// TI - Built environment and 1-year change in weight and waist circumference in middle-aged and older adults: Portland Neighborhood Environment and Health Study JO - Am J Epidemiol VL - 169 UR - https://doi.org/10.1093/aje/kwn398 DO - 10.1093/aje/kwn398 ID - Li2009 ER - TY - JOUR AU - King, A. C. AU - Sallis, J. F. AU - Frank, L. D. AU - Saelens, B. E. AU - Cain, K. AU - Conway, T. L. AU - Chapman, J. E. AU - Ahn, D. K. AU - Kerr, J. PY - 2011 DA - 2011// TI - Aging in neighborhoods differing in walkability and income: associations with physical activity and obesity in older adults JO - Soc Sci Med VL - 73 UR - https://doi.org/10.1016/j.socscimed.2011.08.032 DO - 10.1016/j.socscimed.2011.08.032 ID - King2011 ER - TY - JOUR AU - Lee, I. M. AU - Ewing, R. AU - Sesso, H. D. PY - 2009 DA - 2009// TI - The built environment and physical activity levels: the Harvard Alumni Health Study JO - Am J Prev Med VL - 37 UR - https://doi.org/10.1016/j.amepre.2009.06.007 DO - 10.1016/j.amepre.2009.06.007 ID - Lee2009 ER - TY - JOUR AU - Michael, Y. L. AU - Gold, R. AU - Perrin, N. AU - Hillier, T. A. PY - 2013 DA - 2013// TI - Built environment and change in body mass index in older women JO - Health Place VL - 22 UR - https://doi.org/10.1016/j.healthplace.2013.02.001 DO - 10.1016/j.healthplace.2013.02.001 ID - Michael2013 ER - TY - JOUR AU - Grafova, I. B. AU - Freedman, V. A. AU - Kumar, R. AU - Rogowski, J. PY - 2008 DA - 2008// TI - Neighborhoods and obesity in later life JO - Am J Public Health VL - 98 UR - https://doi.org/10.2105/AJPH.2007.127712 DO - 10.2105/AJPH.2007.127712 ID - Grafova2008 ER - TY - BOOK AU - Waller, L. A. AU - Gotway, C. A. PY - 2004 DA - 2004// TI - Applied Spatial Statistics for Public Health Data PB - Sons, Inc. CY - New Jersey UR - https://doi.org/10.1002/0471662682 DO - 10.1002/0471662682 ID - Waller2004 ER - TY - JOUR AU - Chen, Y. AU - Yi, Q. AU - Mao, Y. PY - 2008 DA - 2008// TI - Cluster of liver cancer and immigration: a geographic analysis of incidence data for Ontario 1998–2002 JO - Int J Health Geogr VL - 7 UR - https://doi.org/10.1186/1476-072X-7-28 DO - 10.1186/1476-072X-7-28 ID - Chen2008 ER - TY - JOUR AU - DeChello, L. M. AU - Sheehan, T. J. PY - 2007 DA - 2007// TI - Spatial analysis of colorectal cancer incidence and proportion of late-stage in Massachusetts residents: 1995–1998 JO - Int J Health Geogr VL - 6 UR - https://doi.org/10.1186/1476-072X-6-20 DO - 10.1186/1476-072X-6-20 ID - DeChello2007 ER - TY - JOUR AU - Fukuda, Y. AU - Umezaki, M. AU - Nakamura, K. AU - Takano, T. PY - 2005 DA - 2005// TI - Variations in societal characteristics of spatial disease clusters: examples of colon, lung and breast cancer in Japan JO - Int J Health Geogr VL - 4 UR - https://doi.org/10.1186/1476-072X-4-16 DO - 10.1186/1476-072X-4-16 ID - Fukuda2005 ER - TY - JOUR AU - Gregorio, D. I. AU - Kulldorff, M. AU - Sheehan, T. J. AU - Samociuk, H. PY - 2004 DA - 2004// TI - Geographic distribution of prostate cancer incidence in the era of PSA testing, Connecticut, 1984 to 1998 JO - Urology VL - 63 UR - https://doi.org/10.1016/j.urology.2003.08.008 DO - 10.1016/j.urology.2003.08.008 ID - Gregorio2004 ER - TY - JOUR AU - Klassen, A. C. AU - Kulldorff, M. AU - Curriero, F. PY - 2005 DA - 2005// TI - Geographical clustering of prostate cancer grade and stage at diagnosis, before and after adjustment for risk factors JO - Int J Health Geogr VL - 4 UR - https://doi.org/10.1186/1476-072X-4-1 DO - 10.1186/1476-072X-4-1 ID - Klassen2005 ER - TY - JOUR AU - Kulldorff, M. AU - Feuer, E. J. AU - Miller, B. A. AU - Freedman, L. S. PY - 1997 DA - 1997// TI - Breast cancer clusters in the northeast United States: a geographic analysis JO - Am J Epidemiol VL - 146 UR - https://doi.org/10.1093/oxfordjournals.aje.a009247 DO - 10.1093/oxfordjournals.aje.a009247 ID - Kulldorff1997 ER - TY - JOUR AU - Sheehan, T. J. AU - DeChello, L. M. PY - 2005 DA - 2005// TI - A space-time analysis of the proportion of late stage breast cancer in Massachusetts, 1988 to 1997 JO - Int J Health Geogr VL - 4 UR - https://doi.org/10.1186/1476-072X-4-15 DO - 10.1186/1476-072X-4-15 ID - Sheehan2005 ER - TY - JOUR AU - Green, C. AU - Hoppa, R. D. AU - Young, T. K. AU - Blanchard, J. F. PY - 2003 DA - 2003// TI - Geographic analysis of diabetes prevalence in an urban area JO - Soc Sci Med VL - 57 UR - https://doi.org/10.1016/S0277-9536(02)00380-5 DO - 10.1016/S0277-9536(02)00380-5 ID - Green2003 ER - TY - JOUR AU - Huang, L. AU - Stinchcomb, D. G. AU - Pickle, L. W. AU - Dill, J. AU - Berrigan, D. PY - 2009 DA - 2009// TI - Identifying clusters of active transportation using spatial scan statistics JO - Am J Prev Med VL - 37 UR - https://doi.org/10.1016/j.amepre.2009.04.021 DO - 10.1016/j.amepre.2009.04.021 ID - Huang2009 ER - TY - JOUR AU - Schuurman, N. AU - Peters, P. A. AU - Oliver, L. N. PY - 2009 DA - 2009// TI - Are obesity and physical activity clustered? A spatial analysis linked to residential density JO - Obesity VL - 17 UR - https://doi.org/10.1038/oby.2009.119 DO - 10.1038/oby.2009.119 ID - Schuurman2009 ER - TY - JOUR AU - Mitra, R. AU - Buliung, R. N. AU - Faulkner, G. E. PY - 2010 DA - 2010// TI - Spatial clustering and the temporal mobility of walking school trips in the Greater Toronto Area, Canada JO - Health Place VL - 16 UR - https://doi.org/10.1016/j.healthplace.2010.01.009 DO - 10.1016/j.healthplace.2010.01.009 ID - Mitra2010 ER - TY - JOUR AU - Pouliou, T. AU - Elliott, S. J. PY - 2009 DA - 2009// TI - An exploratory spatial analysis of overweight and obesity in Canada JO - Prev Med VL - 48 UR - https://doi.org/10.1016/j.ypmed.2009.01.017 DO - 10.1016/j.ypmed.2009.01.017 ID - Pouliou2009 ER - TY - JOUR AU - Pawloski, L. R. AU - Curtin, K. M. AU - Gewa, C. AU - Attaway, D. PY - 2012 DA - 2012// TI - Maternal-child overweight/obesity and undernutrition in Kenya: a geographic analysis JO - Public Health Nutr VL - 15 UR - https://doi.org/10.1017/S1368980012000110 DO - 10.1017/S1368980012000110 ID - Pawloski2012 ER - TY - JOUR AU - Michimi, A. AU - Wimberly, M. C. PY - 2010 DA - 2010// TI - Spatial patterns of obesity and associated risk factors in the conterminous U.S JO - Am J Prev Med VL - 39 UR - https://doi.org/10.1016/j.amepre.2010.04.008 DO - 10.1016/j.amepre.2010.04.008 ID - Michimi2010 ER - TY - JOUR AU - Huang, L. AU - Tiwari, R. C. AU - Pickle, L. W. AU - Zou, Z. PY - 2010 DA - 2010// TI - Covariate adjusted weighted normal spatial scan statistics with applications to study geographic clustering of obesity and lung cancer mortality in the United States JO - Stat Med VL - 29 ID - Huang2010 ER - TY - JOUR AU - Mobley, L. R. AU - Finkelstein, E. A. AU - Khavjou, O. A. AU - Will, J. C. PY - 2004 DA - 2004// TI - Spatial analysis of body mass index and smoking behavior among WISEWOMAN participants JO - J Womens Health VL - 13 UR - https://doi.org/10.1089/1540999041281034 DO - 10.1089/1540999041281034 ID - Mobley2004 ER - TY - JOUR AU - Kruger, J. AU - Ham, S. A. AU - Sanker, S. PY - 2008 DA - 2008// TI - Physical inactivity during leisure time among older adults–Behavioral Risk Factor Surveillance System, 2005 JO - J Aging Phys Act VL - 16 ID - Kruger2008 ER - TY - JOUR AU - Flegal, K. M. AU - Carroll, M. D. AU - Kit, B. K. AU - Ogden, C. L. PY - 2012 DA - 2012// TI - Prevalence of obesity and trends in the distribution of body mass index among US adults, 1999–2010 JO - JAMA VL - 307 UR - https://doi.org/10.1001/jama.2012.39 DO - 10.1001/jama.2012.39 ID - Flegal2012 ER - TY - JOUR AU - Belanger, C. F. AU - Hennekens, C. H. AU - Rosner, B. AU - Speizer, F. E. PY - 1978 DA - 1978// TI - The nurses’ health study JO - Am J Nurs VL - 78 ID - Belanger1978 ER - TY - JOUR AU - Troped, P. J. AU - Starnes, H. A. AU - Puett, R. C. AU - Tamura, K. AU - Cromley, E. K. AU - James, P. AU - Ben-Joseph, E. AU - Melly, S. J. AU - Laden, F. PY - 2014 DA - 2014// TI - Relationships between the built environment and walking and weight status among older women in three U.S. States JO - J Aging Phys Act VL - 22 UR - https://doi.org/10.1123/JAPA.2012-0137 DO - 10.1123/JAPA.2012-0137 ID - Troped2014 ER - TY - JOUR AU - Wolf, A. M. AU - Hunter, D. J. AU - Colditz, G. A. AU - Manson, J. E. AU - Stampfer, M. J. AU - Corsano, K. A. AU - Rosner, B. AU - Kriska, A. AU - Willett, W. C. PY - 1994 DA - 1994// TI - Reproducibility and validity of a self-administered physical activity questionnaire JO - Int J Epidemiol VL - 23 UR - https://doi.org/10.1093/ije/23.5.991 DO - 10.1093/ije/23.5.991 ID - Wolf1994 ER - TY - JOUR AU - Rimm, E. B. AU - Stampfer, M. J. AU - Colditz, G. A. AU - Chute, C. G. AU - Litin, L. B. AU - Willett, W. C. PY - 1990 DA - 1990// TI - Validity of self-reported waist and hip circumferences in men and women JO - Epidemiology VL - 1 UR - https://doi.org/10.1097/00001648-199011000-00009 DO - 10.1097/00001648-199011000-00009 ID - Rimm1990 ER - TY - STD TI - Oak Ridge National Laboratory: LandScan documentation. http://web.ornl.gov/sci/landscan/landscan_documentation.shtml, UR - http://web.ornl.gov/sci/landscan/landscan_documentation.shtml ID - ref45 ER - TY - CHAP AU - Dill, J. PY - 2004 DA - 2004// TI - Measuring network connectivity for bicycling and walking BT - 83rd Annual Meeting of the Transportation Research Board: Washington, D.C ID - Dill2004 ER - TY - STD TI - ESRI Data and Maps 9.3. http://downloads2.esri.com/support/whitepapers/ao_/ESRIData&Maps9.3.pdf, UR - http://downloads2.esri.com/support/whitepapers/ao_/ESRIData&Maps9.3.pdf ID - ref47 ER - TY - STD TI - U.S. Census Bureau: North American Industry Classification System. http://www.census.gov/cgi-bin/sssd/naics/naicsrch?chart=2007, UR - http://www.census.gov/cgi-bin/sssd/naics/naicsrch?chart=2007 ID - ref48 ER - TY - JOUR AU - Frank, L. D. AU - Andresen, M. A. AU - Schmid, T. L. PY - 2004 DA - 2004// TI - Obesity relationships with community design, physical activity, and time spent in cars JO - Am J Prev Med VL - 27 UR - https://doi.org/10.1016/j.amepre.2004.04.011 DO - 10.1016/j.amepre.2004.04.011 ID - Frank2004 ER - TY - JOUR AU - Frank, L. D. AU - Schmid, T. L. AU - Sallis, J. F. AU - Chapman, J. AU - Saelens, B. E. PY - 2005 DA - 2005// TI - Linking objectively measured physical activity with objectively measured urban form: findings from SMARTRAQ JO - Am J Prev Med VL - 28 UR - https://doi.org/10.1016/j.amepre.2004.11.001 DO - 10.1016/j.amepre.2004.11.001 ID - Frank2005 ER - TY - JOUR AU - McCullough, M. L. AU - Willett, W. C. PY - 2006 DA - 2006// TI - Evaluating adherence to recommended diets in adults: the Alternate Healthy Eating Index JO - Public Health Nutr VL - 9 UR - https://doi.org/10.1079/PHN2005938 DO - 10.1079/PHN2005938 ID - McCullough2006 ER - TY - JOUR AU - Kulldorff, M. PY - 1997 DA - 1997// TI - A spatial scan statistic JO - Comm Stat Theor Meth VL - 26 UR - https://doi.org/10.1080/03610929708831995 DO - 10.1080/03610929708831995 ID - Kulldorff1997 ER - TY - JOUR AU - Kulldorff, M. AU - Nagarwalla, N. PY - 1995 DA - 1995// TI - Spatial disease clusters: detection and inference JO - Stat Med VL - 14 UR - https://doi.org/10.1002/sim.4780140809 DO - 10.1002/sim.4780140809 ID - Kulldorff1995 ER - TY - STD TI - Kulldorff M: SaTScanTM Use Guide for version 9.3. http://www.satscan.org/techdoc.html, UR - http://www.satscan.org/techdoc.html ID - ref54 ER - TY - JOUR AU - Ball, K. AU - Bauman, A. AU - Leslie, E. AU - Owen, N. PY - 2001 DA - 2001// TI - Perceived environmental aesthetics and convenience and company are associated with walking for exercise among Australian adults JO - Prev Med VL - 33 UR - https://doi.org/10.1006/pmed.2001.0912 DO - 10.1006/pmed.2001.0912 ID - Ball2001 ER - TY - JOUR AU - Bauman, A. AU - Smith, B. AU - Stoker, L. AU - Bellew, B. AU - Booth, M. PY - 1999 DA - 1999// TI - Geographical influences upon physical activity participation: evidence of a ‘coastal effect’ JO - Aust N Z J Public Health VL - 23 UR - https://doi.org/10.1111/j.1467-842X.1999.tb01265.x DO - 10.1111/j.1467-842X.1999.tb01265.x ID - Bauman1999 ER - TY - JOUR AU - Glass, T. A. AU - Rasmussen, M. D. AU - Schwartz, B. S. PY - 2006 DA - 2006// TI - Neighborhoods and obesity in older adults: the Baltimore Memory Study JO - Am J Prev Med VL - 31 UR - https://doi.org/10.1016/j.amepre.2006.07.028 DO - 10.1016/j.amepre.2006.07.028 ID - Glass2006 ER - TY - JOUR AU - Ding, D. AU - Sallis, J. F. AU - Conway, T. L. AU - Saelens, B. E. AU - Frank, L. D. AU - Cain, K. L. AU - Slymen, D. J. PY - 2012 DA - 2012// TI - Interactive effects of built environment and psychosocial attributes on physical activity: a test of ecological models JO - Ann Behav Med VL - 44 UR - https://doi.org/10.1007/s12160-012-9394-1 DO - 10.1007/s12160-012-9394-1 ID - Ding2012 ER - TY - JOUR AU - Carlson, J. A. AU - Sallis, J. F. AU - Conway, T. L. AU - Saelens, B. E. AU - Frank, L. D. AU - Kerr, J. AU - Cain, K. L. AU - King, A. C. PY - 2012 DA - 2012// TI - Interactions between psychosocial and built environment factors in explaining older adults’ physical activity JO - Prev Med VL - 54 UR - https://doi.org/10.1016/j.ypmed.2011.10.004 DO - 10.1016/j.ypmed.2011.10.004 ID - Carlson2012 ER - TY - JOUR AU - Saelens, B. E. AU - Sallis, J. F. AU - Frank, L. D. AU - Cain, K. L. AU - Conway, T. L. AU - Chapman, J. E. AU - Slymen, D. J. AU - Kerr, J. PY - 2012 DA - 2012// TI - Neighborhood environment and psychosocial correlates of adults’ physical activity JO - Med Sci Sports Exerc VL - 44 UR - https://doi.org/10.1249/MSS.0b013e318237fe18 DO - 10.1249/MSS.0b013e318237fe18 ID - Saelens2012 ER - TY - JOUR AU - Chaix, B. AU - Merlo, J. AU - Chauvin, P. PY - 2005 DA - 2005// TI - Comparison of a spatial approach with the multilevel approach for investigating place effects on health: the example of healthcare utilisation in France JO - J Epidemiol Community Health VL - 59 UR - https://doi.org/10.1136/jech.2004.025478 DO - 10.1136/jech.2004.025478 ID - Chaix2005 ER - TY - JOUR AU - Chaix, B. AU - Merlo, J. AU - Subramanian, S. V. AU - Lynch, J. AU - Chauvin, P. PY - 2005 DA - 2005// TI - Comparison of a spatial perspective with the multilevel analytical approach in neighborhood studies: the case of mental and behavioral disorders due to psychoactive substance use in Malmo, Sweden, 2001 JO - Am J Epidemiol VL - 162 UR - https://doi.org/10.1093/aje/kwi175 DO - 10.1093/aje/kwi175 ID - Chaix2005 ER - TY - STD TI - SaTScan™: Software for the spatial, temporal, and space-time scan statistics. http://www.satscan.org/, UR - http://www.satscan.org/ ID - ref63 ER - TY - STD TI - The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2458/14/1322/prepub UR - http://www.biomedcentral.com/1471-2458/14/1322/prepub ID - ref64 ER -