Last menstrual period versus ultrasound for pregnancy dating.
作者信息
Barr W B, Pecci C C
机构信息
Department of Family Practice and Community Medicine and Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA 19104, USA.
出版信息
Int J Gynaecol Obstet. 2004 Oct;87(1):38-9. doi: 10.1016/j.ijgo.2004.06.008.
PMID:15464776
Abstract
摘要
Zotero 插件