| Institution: | 1. Department of Dermatology, Boston University, Boston, Massachusetts;2. Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania;3. Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania;4. Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania;1. Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria;2. Department of Anatomy II, University Hospital Hamburg-Eppendorf, Hamburg, Germany;3. Department of Orthopaedics, Medical University of Vienna, Vienna, Austria |
