From the Population Health Research Institute (R.I., S.A., S.O., S.I., X.Z., S.R., S.Y.), Michael DeGroote School of Medicine, McMaster University and Hamilton Health Sciences, Hamilton, Ontario, Canada; Department of Community Health Sciences and Medicine (R.I.), The Aga Khan University, Karachi, Pakistan; Boehringer Ingelheim (S.O.), Burlington, Ontario, Canada; University of Zimbabwe (J.C.), Mount Pleasant, Harare, Zimbabwe; Sultan Qaboos University (A.A.-H.), Muscat, Oman; and Hungarian... (At 2008-11-04)