1. Department of Acupuncture and Massage, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China
2. Department of Thoracic Surgery, Shandong Public Health Clinical Center, Jinan, Shandong 250102, P.R. China
3. Medical Research and Laboratory Diagnostic Center, Central Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250013, P.R. China