[1] Nara Med Univ, Dept Diagnost & Intervent Radiol, 840 Shijyocho, Kashihara, Nara 6348521, Japan
[2] Saiseikai Cent Hosp, Div Vasc Surg, Tokyo, Japan
[3] Toho Univ, Div Cardiovasc Med, Ohashi Med Ctr, Tokyo, Japan
[4] TOWN Homecare Clin, Tokyo, Japan
[5] Nara Med Univ, Dept Clin English, Nara, Japan