1 | Department of Endocrinology, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, Shandong, China |
2 | Department of Respiratory, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, Shandong, China |
3 | Department of Quality control, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, Shandong, China |
4 | Department of Traditional Chinese Medicine, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, Shandong, China |