C. N. M. Renckens

C. N. M. Renckens, MD, is in the Department of Obstetrics and Gynecology, Westfries Gasthuis, Hoorn, The Netherlands. Correspondence regarding this article should be addressed to C. N. M. Renckens, PO Box 600, 1620 AR Hoorn, The Netherlands; e-mail: renckens@xs4all.nl.