Corrections to article Helen Walls, Monash University 28 March 2011 Two corrections need to be made to the paper. 1) In the 6th sentence of the last paragraph in the 'Discussion' section, the prevalence of severe obese - grades 2 and 3 - should read 8% and 6% (not 14% and 6%). 2) In the 7th sentence of the last paragraph in the 'Discussion' section, the projected increase in the prevalence of obesity in Australia between 2000 and 2025 should read 65% (not 70%). Thanks, The Authors. Competing interests None.