1. Department of Dermatology Northwestern University Feinberg School of Medicine Chicago IL USA
2. Department of Dermatology University of Texas Southwestern Medical Center Dallas TX USA
3. State University of New York Downstate Medical Center Brooklyn NY USA
4. Department of Dermatology Medical College of Wisconsin Milwaukee WI USA
5. Department of Internal Medicine Massachusetts General Hospital Boston MA USA
6. Department of Internal Medicine Weiss Memorial Hospital Chicago IL USA
7. Department of Dermatology The George Washington University School of Medicine and Health Sciences Washington DC USA