1. Tulane University School of Medicine, New Orleans, Louisiana, USA.
2. Cooper Medical School of Rowan University, Camden, New Jersey, USA.
3. Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
4. Eastern Virginia Medical School, Norfolk, Virginia, USA.
5. Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
6. George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA.
7. Department of Dermatology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
8. Department of Dermatology, University of Missouri, Columbia, Missouri, USA.
9. The Skin Surgery Center, Winston-Salem, North Carolina, USA.
10. Division of Dermatology, University of Vermont Medical Center, Burlington, Vermont, USA.
11. Department of Dermatology, Oregon Health & Science University, Portland, Oregon, USA.
12. Department of Dermatology, University of Minnesota, Minneapolis, Minnesota, USA.
13. Division of Dermatology, University of Texas Dell Medical Center, Austin, Texas, USA.
14. Department of Dermatology, Stanford University, Stanford, California, USA.
15. Department of Dermatology, University of Nebraska Medical Center, Omaha, Nebraska, USA.