[1] Hokkaido Univ, Fac Med, Dept Plast & Reconstruct Surg, Sapporo, Hokkaido, Japan
[2] Hokkaido Univ, Grad Sch Med, Sapporo, Hokkaido, Japan
[3] Fukushima Med Univ, Grad Sch Med, Dept Plast & Reconstruct Surg, Fukushima, Japan
[4] KKR Sapporo Med Ctr Tonan Hosp, Ctr Vasc Anomalies, Chuo Ku, Sapporo, Hokkaido, Japan
[5] Hokkaido Univ, Grad Sch Dent Med, Dept Oral & Maxillofacial Surg, Sapporo, Hokkaido, Japan