Author(s) : Julia Jordan, Ulrich Mey Md, Thomas Bieber, Dagmar Wilsmann-Theis, Department of Dermatology and Allergy, Rheinische Friedrich-Wilhelms-University Bonn, Sigmund-Freud-Str. 25, D-53105 Bonn, Germany, Department of Internal Medicine I, Friedrich-Wilhelms-University, Bonn, Germany. |