1. Swiss Tropical and Public Health Institute and University of Basel, Department of Medical Parasitology and Infection Biology, Socinstrasse 57, 4002 Basel, Switzerland
2. Aga Khan University Hospital, Nairobi, 3rd Parklands Avenue, P.O. Box 30270-00100, Nairobi, Kenya
3. Mabritec SA, Lörracherstrasse 50, P.O. Box 320, 4125 Riehen, Switzerland