1. Department of Parasitology, Leiden University Medical Center, the Netherlands
2. Department of Medical Microbiology, Leiden University Medical Center, the Netherlands
3. Wolfson Wellcome Biomedical Laboratories, Department of Zoology, Natural History Museum, London, United Kingdom
4. Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, the Netherlands
5. Department of Infectious Diseases, Leiden University Medical Center, the Netherlands