Conceptional Age,Menstrual Age,and Ultrasound Age: A Second-trimester Comparison of Pregnancies of Known Conception Date With Pregnancies Dated From the Last Menstrual Period
Free accessReview articleFirst published online July, 1989
Conceptional Age,Menstrual Age,and Ultrasound Age: A Second-trimester Comparison of Pregnancies of Known Conception Date With Pregnancies Dated From the Last Menstrual Period