Waqqas Afif, MD, MSc
Academic title(s): Associate Professor, Division of Clinical Epidemiology and Division of Gastroenterology, Department of Medicine
Maida Sewitch, PhD
Academic title(s): Associate Member, Department of Epidemiology, Biostatistics and Occupational Health; Division of Clinical Epidemiology, Division of Gastroenterology, Division of Experimental Medicine, Department of Medicine