1. Department of Nuclear Medicine, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi, China
2. Changzhi Medical College, Changzhi, Shanxi, China
3. Department of Clinical Laboratory, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
4. Department of Radiology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi, China
5. School of Medicine, University of California, San Diego, California, USA