1. Department of Radiology, Central Hospital Affiliated to Shandong First Medical University, Jinan City, China
2. The Institute for Tissue Engineering and Regenerative Medicine, The Liaocheng University/Liaocheng People’s Hospital, Liaocheng, China
3. Weifang Medical College, Weifang City, China
4. Department of Radiology, Jinan Central Hospital, Cheeloo College of Medicine, Shandong University, Jinan City, China