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pro vyhledávání: '"Sashi Raju"'
Publikováno v:
American Journal of Obstetrics and Gynecology. 161:747-753
A total of 97 transvaginal scans were performed from 4 to 12 weeks' gestation in normal and accurately dated gestations. The sequential appearance of six structures were examined: (1) the gestational sac only was present during week 4; (2) the yolk s