TY  - JOUR
A1  - Kramer, M.S.
A1  - McLean, F.H.
A1  - Boyd, M.E.
A1  - Usher, R.H.
T1  - The Validity of Gestational Age Estimation by Menstrual Dating in Term, Preterm, and Postterm Gestations
Y1  - 1988
DO  - 10.1001/jama.260.22.3306
JF  - Journal of the American Medical Association
VL  - 260
SP  - 3306
EP  - -3308

ER  -