1. Department of Medicine Division of Dermatology The Lundquist Institute Torrance CA 90503 USA
2. Boston University School of Medicine Boston MA 02118 USA
3. Wake Forest School of Medicine Winston‐Salem NC 27101 USA
4. University of Iowa College of Public Health Department of Epidemiology Iowa City IA 52242 USA
5. Department of Family Medicine and Public Health University of California San Diego School of Medicine La Jolla CA 92093 USA
6. Department of Medicine Brigham and Women’s Hospital Harvard Medical School Boston MA 02215 USA
7. Public Health Sciences Division Fred Hutchinson Cancer Research Center Seattle WA 98109 USA
8. Department of Medicine Division of Hematology/Oncology The Lundquist Institute Torrance CA 90503 USA