共 10 条
[1]
ACKRILL P, 1975, BRIT MED J, V2, P172, DOI 10.1136/bmj.2.5964.172
[3]
CAMPBELL S, 1986, OBSTET GYNECOL, V68, P649
[6]
GAUDIER FL, 1988, SURG GYNECOL OBSTET, V167, P533
[10]
THALER I, 1990, J CLIN ULTRASOUND, V8, P364