Affiliation: | a Department of Chemistry, College of Science, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan b Department of Radiological Science, School of Health Science, International University of Health and Welfare, Kitakanemaru, Otawara, Tochigi 324-8501, Japan c The Laboratory of Chemistry, Nippon Medical School, Kosugi, Nakahara-ku, Kawasaki 211-0063, Japan |