1. Department of Radiology, Teaching Hospital, Peradeniya 20400, Sri Lanka
2. Department of Radiology, Faculty of Medicine, University of Peradeniya, Peradeniya 20400, Sri Lanka
3. Surgical Unit, Sirimavo Bandaranaike Specialized Children’s Hospital, Peradeniya 20400, Sri Lanka
4. Department of Community Medicine, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Saliyapura 50008, Sri Lanka