Embryology and ultrasound diagnosis for cardiovascular abnormalities Embryology and ultrasound diagnoses for cardiovascular abnormalities 并列题名：Embryology and ultrasound diagnosis for cardiovascular abnormalities 并列题名：Embryology and ultrasound diagnoses for cardiovascular abnormalities First trimester ultrasound diagnosis of fetal abnormalities 并列题名：First trimester ultrasound diagnosis of fetal abnormalities