1. Department of Obstetrics and Gynecology, Erlangen University Hospital, University of Erlangen−Nuremberg, Universitaetsstrasse 21−23, D-91054 Erlangen, Germany; MicroCoat Biotechnologie GmbH, Am Neuland 1−3, D-82347 Bernried, Germany; and Institute of Pharmacy and Food Chemistry, University of Erlangen−Nuremberg, Schuhstrasse 19, D-91052 Erlangen, Germany