Piyasena, R.D.Weerasekera, D.A.Reginold, G.J.Wikramanayake, I.W.2016-01-142016-01-141982The Ceylon Medical Journal, 27(1)pp.25-30https://dl.nsf.gov.lk/handle/1/21713A Four Year Study of Vasectomy on Plasma Levels of Pituitary and Sex Hormones in Normal Males in Sri LankaArticle