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Int J Gynaecol Obstet. 2004 Oct;87(1):38-9.

Last menstrual period versus ultrasound for pregnancy dating.

Author information

1
Department of Family Practice and Community Medicine and Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA 19104, USA. barrw@uphs.upenn.edu
PMID:
15464776
DOI:
10.1016/j.ijgo.2004.06.008
[Indexed for MEDLINE]

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