aDepartment of Medicine, Division of Critical Care Medicine, Division of Gastroenterology, McMaster University, Hamilton, Ontario, Canada

bDepartment of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Ontario, Canada

Correspondence to Dr Joanna C. Dionne, Assistant Professor, Department of Medicine, Division of Critical Care Medicine, Division of Gastroenterology, Consultant Gastroenterologist and Intensivist, Juravinski Hospital and Cancer Center, Juravinski Hospital and Cancer Center, 711 Concession Street, A3-75, Hamilton, L8V1C3 ON, Canada. Tel: +1 905 521 2100; e-mail: [email protected]aster.ca