Nagata, Takako, Kiko Shiga, Takanori Fujita, Momoko Kitazawa, and Michitaka Yoshimura. “Changes in Subjective Sleep, Physical Condition, and Mental Health During the COVID-19 Pandemic: A Nationwide Survey in Japan”. Journal of Psychological Research 5, no. 3 (July 24, 2023): 11–25. Accessed November 23, 2024. https://journals.bilpubgroup.com/index.php/jpr/article/view/5765.