Appuhamy, P.A.D.S.P.; Kumar, S.T.; Dharmasena, K.M.B.; Kesavan, R.; Sivakanthan, S.; Peranantharajah, T.(Faculty of Medicine & Faculty of Allied Health Sciences, University of Jaffna, 2020)
Surenthirakumaran, R.; Sasrubi, S.; Sasitharan, Shayuthan(Department of Community and Family Medicine, Faculty of Medicine, University of Jaffna Sri Lanka, 2020)
Kumaran, S.; Surenthirakumaran, R.; Coonghe, P. A. D.; Sivarajah, N.(Department of Community and Family Medicine, University of Jaffna, Sri Lanka., 2017)