1 Division of Infectious Diseases (Science), Department of Paediatrics; Division of Microbiology (Campigotto), Department of Paediatric Laboratory Medicine; Division of Gastroenterology, Hepatology and Nutrition (Ng), and Transplant and Regenerative Medicine Centre (Ng), The Hospital for Sick Children, Toronto, Ont. michelle.science@sickkids.ca.
2 Division of Infectious Diseases (Science), Department of Paediatrics; Division of Microbiology (Campigotto), Department of Paediatric Laboratory Medicine; Division of Gastroenterology, Hepatology and Nutrition (Ng), and Transplant and Regenerative Medicine Centre (Ng), The Hospital for Sick Children, Toronto, Ont.