GHTM;
Instituto de Higiene e Medicina Tropical;
Universidade Nova de Lisboa;
Lisbon;
Portugal;
Faculty of Health Sciences;
Laboratory of epidemiology of Chronic and Neurological Diseases (LEMACEN);
Abomey-Calavi University;
Cotonou;
Benin;
Belgium Technical Cooperation—BTC;
Cotonou;
Benin;
Heidelberg University;
Heidelberg;
Germany;