1. Changzhi Medical College, No. 161, Jiefangdong Street, Shanxi Province, Changzhi 046000, China
2. Central Hospital Affiliated to Shenyang Medical College, No.5, Nanqixi Road, Liaoning Province, Shenyang 110000, China
3. Shanxi Dayi Hospital, No.99, Longcheng Street, Shanxi Province, Taiyuan 030000, China
4. Heping Hospital Affiliated to Changzhi Medical College, No.110, Yanannan Road, Shanxi Province, Changzhi 046000, China
5. Central Hospital Affliated to Shenyang Medical College, No.5, Nanqixi Road, Liaoning Province, Shenyang 110000, China