Eap. Steegers et al., SPECIAL ISSUE FROM BIRTH TO CONCEPTION - INTERNATIONAL SCIENTIFIC VALEDICTORY MEETING IN HONOR OF PROF. DR. ESKES,T.K.A.B., MD, PHD, FRCOG,FACOG (HON), European journal of obstetrics, gynecology, and reproductive biology, 78(2), 1998, pp. 9-9