[1] Qingdao Univ, Affiliated Yantai Yuhuangding Hosp, Dept Intervent Therapy, Yantai, Shandong, Peoples R China
[2] Qingdao Univ, Affiliated Yantai Yuhuangding Hosp, Dept Cardiol, Yantai, Shandong, Peoples R China
[3] Yantaishan Hosp, Dept Gen Med, Yantai, Shandong, Peoples R China
[4] Qingdao Univ, Affiliated Yantai Yuhuangding Hosp, Dept Oncol, 20 Yuhuangding East Rd, Yantai 264000, Shandong, Peoples R China