Evaluation of ultrasound-estimated date of delivery in 17 450 spontaneous singleton births: do we need to modify Naegele's rule?
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 1999
ISSN: 0960-7692
DOI: 10.1046/j.1469-0705.1999.14010023.x