Kong M.-S.Huang S.-C.KAI-YUAN TZENLin J.-N.2021-03-182021-03-1819940277-2116https://scholars.lib.ntu.edu.tw/handle/123456789/553601Repeated technetium-99m pertechnetate scanning for children with obscure gastrointestinal bleedingjournal article10.1097/00005176-199404000-0000680572092-s2.0-0028351093