1. Department of Parasitology, Faculty of Veterinary Medicine, Zaragoza, Spain.
2. Medical Entomology & Zoonoses Ecology, Microbial Risk Assessment, Emergency Response Department. Health Protection Agency, Porton Down, Salisbury, Wiltshire, U.K.
3. Department of Parasitology, Faculty of Veterinary Medicine, Kafkas University, Kars, Turkey.
4. Tajik Research Institute of Preventive Medicine of the Ministry of Health of the Republic of Tajikistan, Dushanbe, Tajikistan.