1. Massachusetts General Hospital and Harvard Medical School Boston Massachusetts USA
2. The First Affiliated Hospital of Guangzhou University of Chinese Medicine Guangzhou China
3. Charite ‐ Universitatsmedizin Berlin Berlin Germany
4. Radiology Gotha SRH Poliklinik Gera GmbH Gotha Germany
5. UT Southwestern Medical Center Dallas Texas USA
6. Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts USA
7. Nanjing University Nanjing China