[1] Tufts Univ, Sch Med, Medford, MA USA
[2] Northwestern Univ, Feinberg Sch Med, Chicago, IL USA
[3] Univ Miami, Miller Sch Med, Miami, FL USA
[4] Brigham & Womens Hosp, Dept Dermatol, Dermatol Sect, Dept Med,VA Integrated Serv Network 1 VISN 1, Boston, MA USA
[5] Brigham & Womens Hosp, Dept Dermatol, Boston, MA USA