<affiliation wicri:level="1"><country xml:lang="fr">Suisse</country>
<wicri:regionArea>Epidemiological Research Unit, Copenhagen, Denmark; MRC HIV Clinical Trials Centre, University College London Medical School, London; Laboratorio de Epidemiologia, Centre de Pesquisa Rene Rachou, Belo Horizonte, Brazil; Epidemiological Research Unit, Hospital Clinic I Provincial, Barcelona, Spain; Brazilian Society of Infectious Diseases, Universidade Federal da Bahia, Salvador-Bahia, Brazil; Departmento de Medicina Social, Universidade Federal de Pelotas, Pelotas, Brazil; Navrongo Health Research Centre, Ministry of Health, Navrongo, Ghana; Uganda Virus Research Institute, Entebbe, Uganda; Institute de Biomedicina, Area Hospital Vargas, Caracas, Venezuela; MRC Laboratories, Banjul, The Gambia; Tuberculosis Research Centre, Indian Council for Medical Research, Madras, India; Centre for Research and Training in Skin Diseases and Leprosy, Tehran, Iran; London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK; Public Health Sciences Division, ICDDR.B, Dhaka, Bangladesh; UNDP/World Bank/WHO Special Programme for Research and Training on Tropical Diseases, WHO, Geneva, Switzerland; Christian Medical College Hospital, Vellore, India; Clinical Epidemiology Unit, University of The Philippines College of Medicine, Manila, Philippines; Johns Hopkins University, Department of International Health, Baltimore, MD, USA; Communicable Disease Surveillance Centre, Public Health Laboratory Service, London, UK; Department of Epidemiology and Public Health, Institute of Child Health, London, UK; Institute of Public Health, Makerere University Medical School, Kampala, Uganda; and Swiss Tropical Institute, Basel</wicri:regionArea>
<wicri:noRegion>Basel</wicri:noRegion>
</affiliation>