2 © 2013 Future Medicine 2 2 www.futuremedicine.com Yee Ian Yik Yee Ian Yik is a Pediatric Surgeon in the Department of Pediatric Surgery, University of Malaya, Kuala Lumpur, Malaysia. He has just completed his PhD in the Surgical Research Group, Murdoch Childrens Research Insitute (MCRI), Melbourne and Department of Pediatrics, University of Melbourne, Australia, characterizing colonic moility wıth radionuclear transit studies and studyıng the efect of transcutaneous electrical simulaion on children with intractable consipaion. Andre Tan Andre Tan is a science and bioengineering graduate from Monash University (Melbourne, Australia), and he is currently a PhD student in the Surgical Research Group at MRCI. John M Hutson John M Hutson is Professor and Chair of Pediatric Surgery in the Pediatrics Department at the University of Melbourne, and the Urology Department at the Royal Children’s Hospital (Melbourne, Australia). He is an Honorary Fellow of the MRCI, the American Academy of Pediatrics and the Canadian Associaion of Pediatric Surgeons. He was awarded the Order of Australia in 2007, and he has published over 320 peer-reviewed papers and 15 books on congenital malformaions of the urogenital systems, anorectal malformaions, sexual development and tesicular descent, and chronic consipaion in children. Bridget R Southwell Bridget R Southwell is a Senior Scienist and heads the Gut Moility Laboratory in the Surgical Research Group at MRCI. She is also a Fellow of the Naional Health and Medical Research Council and the American Gastroenterology Associaion. She has published over 150 papers on the development and structure of the enteric nervous system, and diagnosis and treatment of chronic consipaion in children. Her key areas of research are the enteric nervous system, intesinal moility, tesicular descent and consipaion. About the Authors