Chang Y.-S.HSIU-PO WANGGUAN-TARN HUANGMING-SHIANG WULin J.-T.2022-09-062022-09-0619990091-2751https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032769461&doi=10.1002%2f%28SICI%291097-0096%28199909%2927%3a7%3c409%3a%3aAID-JCU9%3e3.0.CO%3b2-5&partnerID=40&md5=98f1a4fca9323dce90e1a9e8b9b0a823https://scholars.lib.ntu.edu.tw/handle/123456789/618614Sonographic 'gastric corona sign': Diagnosis of gastric pneumatosis caused by a penetrating gastric ulcerjournal article10.1002/(SICI)1097-0096(199909)27:7<409104407912-s2.0-0032769461