[1] KOCHI MED SCH, DEPT ENVIRONM & OCCUPAT HLTH, NANKO KU, NANKOKU, KOCHI 78151, JAPAN
[2] KOCHI MED SCH, DEPT GERIATR, NANKO KU, NANKOKU, KOCHI 78151, JAPAN
[3] KAGAWA MED SCH, DEPT PHARMACOL, KIDO 17501, JAPAN
[4] KITASATO JR COLL HLTH & HYG SCI, NIIGATA 94972, JAPAN