Affiliation: | 1. Special Programme for Research and Training in Tropical Diseases (TDR), World Health Organization, Geneva, Switzerland.; 2. University of Buea, Molyko, Buea, Cameroon.; 3. Institute of Hygiene and Environmental Health, Faculty of Medicine, Justus-Liebig-University, Giessen, Germany.; PLoS Neglected Tropical Diseases, United States of America |