Dr Li Ming Wen, MD, MMed, PhD has extensive research experience in the fields of medicine, social science and public health in China and Australia. His current research interests are in childhood obesity, physical activity, active transport and sexual health with specific expertise in the evaluation of health promotion initiatives. Dr Wen, is Principal Investigator (PI) of an NHMRC-funded Healthy Beginnings Trial (NHMRC #393112 in 2010-10, NHMRC#1003780 in 2011-14), which is a 6-year RCT of a home based-intervention designed to reduce family and behavioural risk factors for childhood overweight and obesity for first-time mothers in the most socially and economically disadvantaged areas of Sydney.