Rational use of drugs for the elderly during the COVID-19 pandemic in China: Challenges and opportunities - Qingqing Yin; Qingqing Yin; Dandan Feng; Dandan Feng; Yong Zhao; Yong Zhao; Xiaojuan Zhu; Xiaojuan Zhu; Yan Dong; Jianchun Wang; Jianchun Wang (Frontiers Media S.A., 2023)