Karanicolas Paul J, Montori Victor M, Devereaux P J, Schünemann Holger, Guyatt Gordon H
Department of Clinical Epidemiology and Biostatistics, McMaster University, Ontario, Canada.
J Clin Epidemiol. 2009 May;62(5):489-94. doi: 10.1016/j.jclinepi.2008.08.013.