aDepartment of Pediatrics, Faculty of Health Sciences, McMaster University, Hamilton, Ontario

bDepartment of Pediatrics, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada

cHarvard Medical School, Boston, Massachusetts, United States of America

dCentre for Metabolism, Obesity and Diabetes Research

eFarncombe Family Digestive Health Research Institute, McMaster University

fDivision of Pediatric Gastroenterology & Nutrition, McMaster Children's Hospital, Hamilton, Ontario, Canada

Correspondence to Dr. Nikhil Pai, MD, McMaster Children's Hospital, 1200 Main St W, Rm HSC3A, Hamilton, Ontario, Canada, L8N 3Z5. Tel: +1 905 521 2100 x73587; e-mail: [email protected]