1. Department of Physiology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka.
2. EU/WOAH/WHO Reference Laboratory for Rabies, OMCL for rabies vaccines, French Agency for Food, Environmental and Occupational Health Safety, Nancy, France.
3. Medical Research Institute, Colombo, Sri Lanka.
4. Formerly Boehringer-Ingelheim, Lyon, France.
5. Municipal Veterinary Department, Colombo Municipal Council, Colombo, Sri Lanka.