Yuhuangding Hospital of Yantai, Yantai 264000, Shandong Province, China;
Yuhuangding Hospital of Yantai, Yantai 264000, Shandong Province, China;
Yuhuangding Hospital of Yantai, Yantai 264000, Shandong Province, China;
Yuhuangding Hospital of Yantai, Yantai 264000, Shandong Province, China;
Yuhuangding Hospital of Yantai, Yantai 264000, Shandong Province, China;