Frequent coauthors C. Moore 1 Hermann Hoffmann 1 Heiko Zimmermann 1 M. Öettel 1 T Gräser 1 W. Elger 1
review 1998 Approaches to the replacement of ethinylestradiol by natural 17β-estradiol in combined oral contraceptives ·doi:10.1016/s0940-2993(98)80034-1