1 Warren Alpert Medical School of Brown University, Providence, Rhode Island.
2 Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, Rhode Island.
3 Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, Rhode Island; Department of Epidemiology, Brown School of Public Health, Providence, Rhode Island.
4 Department of Dermatology, Warren Alpert Medical School of Brown University, Providence, Rhode Island; Department of Epidemiology, Brown School of Public Health, Providence, Rhode Island; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address: [email protected].