WEI-ZEN SUN2018-09-102018-09-101994http://www.scopus.com/inward/record.url?eid=2-s2.0-0028389682&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/306351"Pinch-off sign" and spontaneous fracture of an implanted central venous catheter: report of a casejournal article