Shawn C. Roll; Kevin D. Evans. Sonographic Representation of Bifid Median Nerve and Persistent Median Artery. Journal of Diagnostic Medical Sonography. 2012-04-12, 27 (2): 89–94. doi:10.1177/8756479311399763.引文使用过时参数coauthors (帮助); 使用|accessdate=需要含有|url= (帮助)