Early pregnancy ultrasound measurements and prediction of first trimester pregnancy loss: A logistic model | Scientific Reports
Gestational Sac during Pregnancy
サク 田町芝浦(Sac.)|ホットペッパービューティー
Appendix 2: Low gestational sac in the first trimester with previous caesarean section | New Zealand Obstetric Ultrasound Guidelines | Ministry of Health NZ