[1] Nihon Univ, Coll Ind Technol, High Technol Res Ctr, Narashino, Chiba 2750005, Japan
[2] Univ Tokyo, Inst Med Sci, Dept Surg, Minato Ku, Tokyo 108, Japan
[3] Paul Scherrer Inst, Dept Spallat Neutron Source, CH-5232 Villigen, Switzerland
[4] CEN Saclay, CEA, SIREN, DRE,SRO, F-91191 Gif Sur Yvette, France
[5] Teikyo Univ, Sch Pharmaceut Sci, Sagamiko, Kanagawa 1990195, Japan
[6] Rikkyo Univ, Inst Atom Energy, Yokosuka, Kanagawa 24001, Japan