1. Department of Internal Medicine I, St. Vincenz Hospital Datteln, 45711 Datteln, Germany
2. Institute of Medical Microbiology, University Hospital Münster, 48149 Münster, Germany
3. UCD School of Biology and Environmental Science, University College Dublin, D04 N2E5 Dublin, Ireland
4. Parasitology Reference and Research Laboratory, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, 28220 Madrid, Spain