Early Pregnancy Ultrasound Assessment of Multiple Pregnancy | IntechOpen
Diagnosis and Characterization of Multiple Gestations | Radiology Key
Diagnosis and Characterization of Multiple Gestations | Radiology Key
Ultrasounds! — The Bump
Monochorionic monoamniotic twin pregnancies with two yolk sacs may not be a rare finding: a report of two cases - Murakoshi - 2010 - Ultrasound in Obstetrics & Gynecology - Wiley Online Library
Yolk sac number does not predict reliably amnionicity in monochorionic twin pregnancies: a case of a monochorionic monoamniotic twin pregnancy with two distinct yolk sacs on early first‐trimester ultrasound - Corbett -
What is a Gestational Sac? - Definition from FertilitySmarts