[1] VET ADM MED CTR,DERMATOL SERV,SAN FRANCISCO,CA 94121
[2] UNIV CALIF SAN FRANCISCO,DEPT DERMATOL,SAN FRANCISCO,CA 94143
[3] JOHNS HOPKINS UNIV,DIV CLIN IMMUNOL,BALTIMORE,MD 21218
[4] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DEPT MED,RICHMOND,VA 23298