Chung C.Wang M.HSIU-PO WANG2021-01-152021-01-1520090016-5085https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649219167&doi=10.1053%2fj.gastro.2008.12.055&partnerID=40&md5=32be1684f87578d63a8a3c5b66dbe4f3https://scholars.lib.ntu.edu.tw/handle/123456789/541094A "Crescent-in-doughnut" Lesion at Right Lower Quadrant Abdomennote10.1053/j.gastro.2008.12.055194909532-s2.0-67649219167