1. From the Collagen Research Unit, Biocenter Oulu and Department of Medical Biochemistry and Molecular Biology (J.M.M., H.T., K.I.K., R. Soininen), Department of Obstetrics and Gynecology (J.R., K.M.), and Biocenter Oulu and Department of Pathology (R. Sormunen), University of Oulu, Finland.