[1] Department of Medicine and Science in Sports and Exercise,
[2] Graduate School of Medicine,undefined
[3] Tohoku University,undefined
[4] Kawauchi,undefined
[5] Aobaku,undefined
[6] Sendai,undefined
[7] 980-8576,undefined
[8] Japan e-mail: fujimoto@mail.cc.tohoku.ac.jp Tel.: +81-22-2177769; Fax: +81-22-2177772,undefined
[9] Cyclotron and Radioisotope Center,undefined
[10] Tohoku University,undefined
[11] Sendai,undefined
[12] 980-8578,undefined
[13] Japan,undefined
[14] Department of Nuclear Medicine and Radiology,undefined
[15] Institute of Development,undefined
[16] Aging and Cancer,undefined
[17] Tohoku University,undefined
[18] Sendai,undefined
[19] 980-8575,undefined
[20] Japan,undefined