1 Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan; Department of Dermatology, KKR Sapporo Medical Center, Sapporo, Japan.
2 Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
3 Department of Dermatology, KKR Sapporo Medical Center, Sapporo, Japan.
4 Center for Pediatric Allergy and Rheumatology, KKR Sapporo Medical Center, Sapporo, Japan.
5 Department of Pathology, KKR Sapporo Medical Center, Sapporo, Japan.
6 Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
7 Center for Pediatric Allergy and Rheumatology, KKR Sapporo Medical Center, Sapporo, Japan; Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan.