Yantaishan Hospital Affiliated to Taishan Medical University, Yantai, Shandong 264000, China;
Yantaishan Hospital Affiliated to Taishan Medical University, Yantai, Shandong 264000, China;
Yantaishan Hospital Affiliated to Taishan Medical University, Yantai, Shandong 264000, China;
Yantaishan Hospital Affiliated to Taishan Medical University, Yantai, Shandong 264000, China;