Kuhn Louise, Kroon Max
Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, United States.
Department of Epidemiology, Mailman School of Public Health, Columbia University, United States.
South Afr J HIV Med. 2015 May 20;16(1):377. doi: 10.4102/sajhivmed.v16i1.377. eCollection 2015.