50 Years Ago in The Journal of Pediatrics: Clinical-pathologic studies as a method of research

a Professor of Paediatrics, Microbiology, and Dentistry, Canada Research Chair in Gastrointestinal Disease

b Professor of Pathology, Division of Pathology, Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada