Association between polypharmacy and the long-term prescription of hypnotics in Japan: a retrospective cross-sectional study - Komatsu, Munehiro; Takeshima, Masahiro; Yoshizawa, Kazuhisa; Ogasawara, Masaya; Kudo, Mizuki; Miyakoshi, Eru; Itoh, Yu; Shibata, Nana; Ayabe, Naoko; Mishima, Kazuo (Frontiers in Psychiatry, 2024)