Zhang, Li, Tingting Li, Liangkai Chen, Feng Wu, Wenguang Xia, Min Huang, Zhenli Guo, et al. “Association of Sleep Quality before and After SARS-CoV-2 Infection With Clinical Outcomes in Hospitalized Patients With COVID-19 in China”. EXCLI Journal 20 (May 14, 2021): 894–906. Accessed April 24, 2024. https://www.excli.de/index.php/excli/article/view/3451.