1. Department of Parasitology, Faculty of Medicine, University of Colombo, PO Box 271, Kynsey Road, Colombo C0008, Sri Lanka
2. Anti Malaria Campaign, Ministry of Health, 555/5 Public Health Complex, Narahenpita, Colombo, Sri Lanka
3. Directorate of Health Services, Sri Lanka Air Force Head Quarters, C0002, Sri Lanka
4. Director Preventive Medicine and Mental Health Services, Army Head Quarters C0004, Sri Lanka
5. Department of Pathology, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia