[1] Case Western Reserve Univ, Sch Med, 9501 Euclid Ave, Cleveland, OH 44106 USA
[2] Brown Univ, Warren Alpert Med Sch, Providence, RI USA
[3] Eastern Virginia Med Sch, Norfolk, VA USA
[4] Johns Hopkins Univ, Sch Med, Dept Dermatol, Baltimore, MD USA
[5] Univ Colorado, Colorado Sch Publ Hlth, Dept Epidemiol, Anschutz Med Campus, Aurora, CO USA
[6] US Dept Vet Affairs, Rocky Mt Reg Med Ctr, Dermatol Serv, Aurora, CO USA