- Clinical and epidemiological studies on HIV/AIDS in a clinic setting in Toronto and internationally. This includes effectiveness of antiretroviral therapy, outcomes, compliance and risk factors for progression.
- Chronic Fatigue Syndrome: pathogenesis and outcomes.
Economic barriers, evidentiary gaps, and ethical conundrums: a qualitative study of physicians' challenges recommending HPV vaccination to older gay, bisexual, and other men who have sex with men.
Int J Equity Health. 2019 10 17;18(1):159
HIV-positive gay men's knowledge and perceptions of Human Papillomavirus (HPV) and HPV vaccination: A qualitative study.
PLoS One. 2018;13(11):e0207953
Progression From Perianal High-Grade Anal Intraepithelial Neoplasia to Anal Cancer in HIV-Positive Men Who Have Sex With Men.
Dis Colon Rectum. 2016 Sep;59(9):836-842
Enhanced syphilis screening among HIV-positive men (ESSAHM): a study protocol for a clinic-randomized trial with stepped wedge design.
Implement Sci. 2016;11(1):8
Can J Infect Dis Med Microbiol. 2015 Sep-Oct;26(5):251-252
Can J Infect Dis Med Microbiol. 2015 Jul-Aug;26(4):181-2
Cancer Cytopathol. 2015 Aug 13;
Anal cancer and intraepithelial neoplasia: epidemiology, screening and prevention of a sexually transmitted disease.
CMAJ. 2014 Dec 15;
Can J Infect Dis Med Microbiol. 2014 Jul;25(4):e83-4
Cancer Med. 2014 Aug;3(4):1052-61
Clinician Investigator, Toronto General Hospital Research Institute (TGHRI)
Professor of Medicine, University of Toronto
Director, Immunodeficiency Clinic, Toronto General Hospital