[1] Univ Amsterdam, Acad Med Ctr, Dept Social Med, NL-1105 AZ Amsterdam, Netherlands
[2] Univ Catholico Mocambique, Fac Med, Dept Saude Familiar & Comunitaira, Beira, Mozambique
[3] Univ Amsterdam, Acad Med Ctr, Clin Res Unit, NL-1105 AZ Amsterdam, Netherlands
[4] Univ Catholico Mocambique, Fac Med, Dept Saude Publ, Beira, Mozambique