TY - JOUR A1 - Meister, R. A1 - Schaefer, C. T1 - Statistical methods for estimating the probability of spontaneous abortion in observational studies: Analyzing pregnancies exposed to coumarin derivatives Y1 - 2008 DO - 10.1016/j.reprotox.2008.06.006 VL - 26 IS - 1 ER -