[1] Univ Calgary, Div Dermatol, Calgary, AB, Canada
[2] Univ Calgary, Dept Pediat, Sect Community Pediat, Calgary, AB, Canada
[3] Univ Calgary, Dept Pediat, Sect Pediat Rheumatol, Calgary, AB, Canada
[4] Univ Calgary, Dept Med, Calgary, AB, Canada
[5] Skin Hlth & Wellness Ctr, Calgary, AB, Canada
[6] Dermatol Res Inst, Calgary, AB, Canada
[7] Prob Med Res, Calgary, AB, Canada
[8] Tufts Med Ctr, Dept Dermatol, Boston, MA 02111 USA
[9] Univ Sydney, Sydney Med Sch Northern, Sydney, NSW, Australia
[10] Skin Hosp, Darlinghurst, NSW, Australia
[11] Royal North Shore Hosp Sydney, Sydney, NSW, Australia
[12] AbbVie Inc, N Chicago, IL USA
[13] Univ Manchester, Salford Royal NHS Fdn Trust, Dermatol Ctr, Manchester NIHR Biomed Res Ctr, Manchester, Lancs, England