Chen H.-YFON-JOU HSIEHLI-HUI TSENGSHEE-UAN CHENChang F.M.2020-02-062020-02-061990https://scholars.lib.ntu.edu.tw/handle/123456789/454588Image and Doppler study by vaginal ultrasound - Pelvic vessels and early pregnancyconference paper2-s2.0-0025293940