1. Doctors with Africa CUAMM, Beira, Mozambique.
2. Department of Biomedical Sciences and Human Oncology, Clinic of Infectious Diseases, University of Bari, Bari, Italy.
3. UNICEF Mozambique, Maputo, Mozambique.
4. Operational Research Unit, Doctors with Africa CUAMM, Padua, Italy.
5. Department of HIV Medicine, Chelsea and Westminster Hospital NHS Foundation Trust, London, United Kingdom.
6. Department Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom.