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Umbilical cord insertion into the lower segment of the uterus at 11 to 13 weeks' gestation is associated with maternal serum PAPP-A |
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| Authors: | Hasegawa Junichi Farina Antonio Simonazzi Giuliana Bisulli Maria Puccetti Chiara Pilu Gianluigi Gabrielli Sandro Rizzo Nicola |
| Affiliation: | Department of Obstetrics and Gynecology, St Orsola Malpighi Hospital, University of Bologna, Bologna, Italy. hasejun@oak.dti.ne.jp |
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