Examination of reliability and validity of the Self-Assessment Burden Scale-Motor for community-dwelling older adults in Japan: a validation study oleh Hiroshi Warabino, Toshikatsu Kaneda, Yuma Nagata, Katsushi Yokoi, Kazuyo Nakaoka, Yasuhiro Higashi, Yoshimi Yuri, Hiroko Hashimoto, Shinichi Takabatake