Division of Clinical Epidemiology, Montreal, Quebec, Canada
Montreal Chest Institute of the McGill University Health Center (MUHC), Montreal, Quebec, Canada
McGill University Health Centre, Montréal, Quebec, Canada
St Mary's Research Centre, Montreal, Quebec, Canada
McGill University Health Centre, Montréal, Quebec, Canada
University of Alberta, Edmonton, Alberta, Canada
Vietnam national university, Hanoi, Vietnam
Komfo Anokye Teaching Hospital (KATH), Kumasi, Ghana
World Vision, Toronto, Ontario, Canada
University of Ghana, Legon, Ghana
McGill University, Montreal, Quebec, Canada
Royal Victoria Hospital, Montreal, Quebec, Canada