Tissera Hasitha, Weeraman Jayantha, Amarasinghe Ananda, Wijewickrama Ananda, Palihawadana Paba, Fernando LakKumar
Epidemiology Unit, Ministry of Health, Sri Lanka.
Infectious Disease Hospital, Ministry of Health, Sri Lanka.
WHO South East Asia J Public Health. 2014 Jan-Mar;3(1):5-7. doi: 10.4103/2224-3151.206884.