Safety analysis of zolpidem in elderly subjects 80 years of age or older: adverse event monitoring in Japanese subjects. - Kajiwara, Ayami; Yamamura, Masato; Murase, Motoji; Koda, Haruo; Hirota, Seisuke; Ishizuka, Tadao; Morita, Kazunori; Oniki, Kentaro; Saruwatari, Junji; Nakagawa, Kazuko (Aging & Mental Health, 2016)