https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1167
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1136
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1138
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1213
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1181
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1215
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1148
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1191
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S2
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1193
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S4
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1162
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1200
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1199
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1166
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1237
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1129
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1212
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1176
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1143
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1184
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S1
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1149
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1153
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1226
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1194
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S5
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1232
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1196
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1163
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1198
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S9
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1201
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1132
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1203
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1171
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1134
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1205
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1169
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1173
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1140
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1207
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1211
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1175
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1142
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1209
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1177
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1144
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1179
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1183
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1146
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1150
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1217
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1221
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1185
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1152
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1219
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1223
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1187
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1154
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1225
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1189
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1156
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1160
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1227
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1231
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1195
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S6
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1158
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1229
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1233
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1197
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S8
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1125
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1164
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1235
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1127
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1131
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1202
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1170
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1133
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1204
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1168
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1172
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1135
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1206
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1210
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1174
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1137
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1208
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1180
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1139
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1214
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1178
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1182
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1145
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1216
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1220
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1147
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1151
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1218
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1222
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1186
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1190
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1224
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1188
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1192
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S3
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1155
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1230
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1157
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1228
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-S3-S7
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1159
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1234
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1126
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1130
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1165
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1236
https://bmcpublichealth.biomedcentral.com/articles/10.1186/1471-2458-14-1128