Yen C.-F.Chen K.-L.TSEN-FANG TSAI2020-10-222020-10-2220180001-7310https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046468567&doi=10.1016%2fj.ad.2016.11.025&partnerID=40&md5=4830f7569699e766b611399b9b54f2d2https://scholars.lib.ntu.edu.tw/handle/123456789/517563Ulcerative nodules on the perineum [N?dulos ulcerados perianales]journal article10.1016/j.ad.2016.11.025284951282-s2.0-85046468567