The frequency of breech presentation by gestational age at birth: a large population-based study.
作者信息
Hickok D E, Gordon D C, Milberg J A, Williams M A, Daling J R
机构信息
Division of Perinatal Medicine, Swedish Hospital Medical Center, Seattle, WA 98104.
出版信息
Am J Obstet Gynecol. 1992 Mar;166(3):851-2. doi: 10.1016/0002-9378(92)91347-d.
PMID:1550152
Abstract
From a study of birth records, breech presentation at delivery for each gestational age was found to be less frequent as compared with other reports about antenatal ultrasonographic examination. Selection bias or the effect of labor may account for the observed difference.
摘要
Zotero 插件