[1] Natl Def Med Coll, Dept Pharmacol, Tokorozawa, Saitama 359, Japan
[2] Gunma Univ, IMCR, Maebashi, Gunma 371, Japan
[3] Natl Def Med Coll, Dept Endocrinol, Tokorozawa, Saitama 359, Japan
[4] Keio Univ, Fac Sci & Tech, Yokohama, Kanagawa 223, Japan
[5] Okayama Univ, Grad Sch Nat Sci & Tech, Okayama, Japan