Peretz B A, Markovitci R, Feldman E, Zimmer E Z, Paldi E
Rev Fr Gynecol Obstet. 1984 Nov;79(11):725-6.
In 52 cases of breech presentation, the biparietal diameter of the fetal head was measured before and after external version of the fetus. There was no significant statistical difference between these two measurements.
在52例臀位病例中，在对胎儿进行外倒转术前后测量了胎头双顶径。这两个测量值之间无显著统计学差异。
