Hung C.-Y.KE-VIN CHANGÖzçakar L.2020-09-082020-09-0820151098-7339https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942918525&doi=10.1097%2fAAP.0000000000000224&partnerID=40&md5=dc35d217acd829b219f14e88934c81achttps://scholars.lib.ntu.edu.tw/handle/123456789/513903Sonographic localization of the piriformis muscle using a caudal-to-cranial approachletter10.1097/AAP.0000000000000224258999632-s2.0-84942918525