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Ultrasound of the First Trimester of Pregnancy
Levi, Clifford S., Dashefsky, Sidney M., Holt, Susan C., Lindsay, Daniel J., Lyons, Edward A.Volume:
11
Journal:
Ultrasound Quarterly
DOI:
10.1097/00013644-199301120-00001
Date:
October, 1993
File:
PDF, 13.21 MB
1993