Justino H, Benson L N, Freedom R M
Department of Pediatrics, Division of Cardiology, and the Variety Club Cardiac Catheterization Laboratories, The Hospital for Sick Children, University of Toronto School of Medicine, Toronto, Ontario, Canada.
Circulation. 2001 Feb 27;103(8):E39-40. doi: 10.1161/01.cir.103.8.e39.