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Pilot study establishing a nomogram of yolk sac growth during the first trimester of pregnancy - Detti - 2020 - Journal of Obstetrics and Gynaecology Research - Wiley Online Library
Doctor Virginia Lazar - Sacul Yolk Sau vezicula vitelina este prima structura ce apare in interiorul sacului gestational. Poate fi observata inca de la 5 saptamani de amenoree, prezenta ei confirmand diagnosticul
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Sacul gestațional și semnificația lui în sarcină - Dr. Andreas Vythoulkas | Specialist Infertilitate
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