Zhang Yi-Xiu, Meng Hua, Zhong Ding-Rong, Jiang Yu-Xin, Dai Qing, Zhang Hong
Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Shuaifuyuan, Wangfujing, 100730 Beijing, China.
J Ultrasound Med. 2008 Jun;27(6):979-82. doi: 10.7863/jum.2008.27.6.979.