1 District General Hospital, Nuwara-Eliya, Sri Lanka; Sri Lanka Cancer Research Group, Sri Lanka College of Oncologists, Maharagama, Sri Lanka.
2 District General Hospital, Chilaw, Sri Lanka.
3 District General Hospital, Nuwara-Eliya, Sri Lanka.
4 Anti-malaria Campaign, Ministry of Health, Colombo, Sri Lanka.
5 National Programme for Tuberculosis Control and Chest Diseases, Sri Lanka.
6 Sri Lanka Cancer Research Group, Sri Lanka College of Oncologists, Maharagama, Sri Lanka; District General Hospital, Chilaw, Sri Lanka; Teaching Hospital, Batticaloa, Sri Lanka.