1. Department of Veterinary Technology, Faculty of Veterinary Technology, Kasetsart University, Bangkok, Thailand
2. Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
3. Department of Biology, School of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
4. University of Cologne, Medical Faculty and University Hospital Cologne, Cologne, Germany
5. Department of Parasitology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand