Effects of a video-viewing intervention with positive word stimulation on the depressive symptoms of older patients with cardiac disease and subthreshold depression: a pilot random... oleh Masataka Sakimoto, Takumi Igusa, Takuya Kobayashi, Hiroyuki Uchida, Aya Fukazawa, Chihaya Machida, Hirokuni Fujii, Keisuke Sekine, Minori Kurosaki, Kenji Tsuchiya, Senichiro Kikuchi, Kazuki Hirao