[1] Tohoku Univ, Grad Sch Med, Dept Tradit Asian Med, Aoba Ku, 2-1 Seiryo Machi, Sendai, Miyagi 9808575, Japan
[2] Aomori Jikei Hosp, 146-1 Yasutachikano, Aomori, Aomori 0380021, Japan
[3] Nishitaga Natl Hosp, Taihaku Ku, Sendai, Miyagi 9828555, Japan
[4] Tohoku Univ Hosp, Grad Med Educ Ctr, Aoba Ku, Sendai, Miyagi 9808574, Japan