1. Divisions of Epidemiology & Zoonoses, Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine University of Tehran Tehran Iran
2. HIV/STI Surveillance Research Center, and WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health Kerman University of Medical Sciences Kerman Iran
3. Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases Pasteur Institute of Iran Tehran Iran