1. Epidemiology Unit, Prince Leopold Institute of Tropical Medicine, Antwerp, Belgium
2. Department of Medical Microbiology and Parasitology, University of Khartoum, Sudan
3. Department of Applied Mathematics and Informatics, Universiteit Gent, Belgium
4. Unidade de Leishmanioses, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Portugal
5. Protozoology Unit, Prince Leopold Institute of Tropical Medicine, Antwerp, Belgium