Kumaran, S.; Surenthirakumaran, R.; Coonghe, P.A.D.; Sivarajah, N.(Department of Community and Family Medicine, University of Jaffna, Sri Lanka., 2017)
Nironraj, N.; Midhuna, U.; Fernando, J.; Surenthirakumaran, R.; Sooriyakumar, T.(Faculty of Medicine & Faculty of Allied Health Sciences, University of Jaffna, 2020)