| Affiliation: | (1) Department of Clinical Epidemiology, Canadian College of Naturopathic Medicine, North York, Ontario, Canada;(2) Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada;(3) London School of Hygiene & Tropical Medicine, University of London, London, UK;(4) Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada;(5) Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA |
