TY - GEN AU - Reuss,M L AU - Hatch,M C AU - Susser,M TI - Early ultrasound dating of pregnancy: selection and measurement biases SN - 0895-4356 PY - 1995///0531 KW - Female KW - Gestational Age KW - Humans KW - Menstruation KW - Multivariate Analysis KW - Pregnancy KW - Pregnancy Complications KW - diagnostic imaging KW - Prospective Studies KW - Selection Bias KW - Ultrasonography, Prenatal KW - Uterine Hemorrhage N1 - Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S UR - https://doi.org/10.1016/0895-4356(94)00162-j ER -