Awareness of the COVID-19 outbreak and resultant depressive tendencies in patients with severe Alzheimer’s disease Manuscript Number: 20-0832R1 Author(s): Kentaro Hirao, Daisuke Hirose, Yuta Inagawa, Yoshitsugu Kaneko, Hidekazu Kanetaka, Yusuke Ogawa, Hirofumi Sakurai, Shu Sakurai, Shuntaro Serisawa, Soichiro Shimizu, Naoto Takenoshita, Akito Tsugawa