de Silva, B.A.Herath, H.M.R.P.Wijesinghe, P.S.2014-10-292014-10-292007Sri lanka Journal of Obstetrics and Gynaecology. 2007; 29: pp.14-181391-7536 (Print)2279-1655 (Online)http://repository.kln.ac.lk/handle/123456789/1778Not IndexedNo Abstract AvailableReview ArticleObstetrics and Gynaecology