1. Department of Dermatology (M.B.), Laboratory for Neuroendocrinology of the Skin and Interdisciplinary Endocrinology, University of Münster, D-48149 Münster, Germany;
2. Department of Orthopaedic Surgery (S.G.), ZMB/BioPark 1, University of Regensburg, D-93053 Regensburg, Germany