1 Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique; Institute of Environmental Assessment and Water Research (IDÆA-CSIC), Jordi Girona, 18, 08034 Barcelona, Catalonia, Spain; Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Rosselló 132, 4a, 08036 Barcelona, Catalonia, Spain.
2 Institute of Environmental Assessment and Water Research (IDÆA-CSIC), Jordi Girona, 18, 08034 Barcelona, Catalonia, Spain. Electronic address: joan.grimalt@idaea.csic.es.
3 Centre for Research in Environmental Epidemiology (CREAL), Doctor Aiguader, 88, 08003 Barcelona, Catalonia, Spain; Ciber Epidemiología y Salud Pública, Spain.
4 Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique; Instituto Nacional de Saúde, Ministerio de Saúde, Maputo, Mozambique.
5 Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique; Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Rosselló 132, 4a, 08036 Barcelona, Catalonia, Spain; Ciber Epidemiología y Salud Pública, Spain.
6 Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique.