[1] UNIV TORONTO,DEPT DERMATOL,TORONTO M5S 1A1,ONTARIO,CANADA
[2] UNIV TORONTO,DEPT MED & DERMATOL,TORONTO M5S 1A1,ONTARIO,CANADA
[3] WOMENS COLL HOSP,TORONTO M5S 1B2,ONTARIO,CANADA
[4] TORONTO GEN HOSP,DEPT PATHOL,TORONTO M5G 1L7,ONTARIO,CANADA
[5] TORONTO WESTERN HOSP,DEPT DERMATOL,TORONTO M5T 2S8,ONTARIO,CANADA