1 Department of Community Medicine, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Anuradhapura, 5000, Sri Lanka . buddhikatbw@icloud.com.
2 Department of Anthropology, Indiana University, Bloomington, IN, 47405, USA.
3 Department of Anatomy, Faculty of Medicine, University of Kelaniya, Ragama, 11010, Sri Lanka.
4 Department of Community Medicine, Faculty of Medicine and Allied Sciences, Rajarata University of Sri Lanka, Anuradhapura, 5000, Sri Lanka.