[1] Departments of Internal Medicine and Medical Microbiology, College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB
[2] Epidemiology for Global Health Institute, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp
[3] Sexually Transmitted Infection Unit, Institute of Tropical Medicine, Antwerp
[4] University of Cape Town, Cape Town, Western Cape
[5] Division of Infectious Diseases, Department of Internal Medicine, University of California Davis Medical Center, Sacramento, CA
[6] Department of Medical Microbiology and Immunology, University of California-Davis, Davis, CA