Ranawaka, U.K.Goonaratna, C.2014-10-292014-10-292007The Ceylon Medical Journal. 2007; 52(4): pp.117-190009-0875 (Print)http://repository.kln.ac.lk/handle/123456789/1802Indexed in MEDLINENo Abstract AvailableClinical Trials as Topic-standardsEvidence-Based MedicineSri LankaSri Lanka clinical trials registryArticleMedicine