[1
]
Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry,
The University of Western Ontario, London, Ontario, Canada. Electronic address: greta.bauer@schulich.uwo.ca.
[2
]
Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry,
The University of Western Ontario, London, Ontario, Canada.
[3
]
Department of Family and Community Medicine, University of California San Francisco
and the LA Gay and Lesbian Center, Los Angeles, CA.
[4
]
Department of Emergency Medicine, St. Joseph's Healthcare, and the Department of Medicine,
DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada.