Department of Geriatrics, Qihi Hospital, Shandong University, Jinan, Shandong 250012, China;
Institute of Basic Medicine, Shandong Academy of Medical Science, Jinan, Shandong 250062, China;
Department of Cardiology, Qihi Hospital, Shandong University, Jinan, Shandong 250012, China;
Department of Geriatrics, Qihi Hospital, Shandong University, Jinan, Shandong 250012, China;
Department of Geriatrics, Qihi Hospital, Shandong University, Jinan, Shandong 250012, China;