MEI-HWEI CHANGWang T.-H.Hsu J.-Y.Lee T.-C.Wang C.-Y.Yu J.-Y.2021-01-042021-01-0419830016-5107https://www.scopus.com/inward/record.uri?eid=2-s2.0-0020701773&doi=10.1016%2fS0016-5107%2883%2972490-9&partnerID=40&md5=cf37afa7e0e62cca0db34b4db26af4cdhttps://scholars.lib.ntu.edu.tw/handle/123456789/537346Endoscopic examination of the upper gastrointestinal tract in infancyjournal article10.1016/S0016-5107(83)72490-92-s2.0-0020701773