C. van Katwijk

Clinical aspects of pregnancy after the age of 35 years: a review of the literature.

L. Peeters, C. van Katwijk, 1998, Human reproduction update.

Severe limb defects and craniofacial anomalies in a fetus conceived during acitretin therapy.

C. D. de Die-Smulders, P. Sastrowijoto, M. Sturkenboom, 1995, Teratology.

Effect of maternal posture on the umbilical artery flow velocity waveform.

J. Wladimiroff, C. van Katwijk, 1991, Ultrasound in medicine & biology.

Endometrial wavelike movements during the menstrual cycle.

G. Dunselman, H. Hoogland, M M Ijland, 1996, Fertility and sterility.