Edirisinghe, N. P., Makuloluwa, T. R., Amarasekara, T. D., & Goonewardena, C. S. E. 2019, ‘Different qualities of the subjective pain experience among patients with cancer attending Apeksha Hospital, Maharagama’, “Sustainability, Ethics & Governance through Multidisciplinary Research“ (https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3498061)