Perera, J.2016-01-142016-01-141993The Ceylon Medical Journal, 38(3)pp.140-142https://dl.nsf.gov.lk/handle/1/20460Medical SciencesUmbilical ulcerationRoundwormsAscaris lumbricoidesPaediatricsSurgeryInfectious diseasesPatent vitello-intestinal duct. an unusual presentationArticle