TSANG-MING KOLI-HUI TSENGHSIAO-LIN HWA2020-02-032020-02-031998https://scholars.lib.ntu.edu.tw/handle/123456789/453076Second-trimester genetic amniocentesis in twin pregnancyjournal article10.1016/S0020-7292(98)00045-92-s2.0-0032104159