1. Sino-German Research Center of Ultrasound in Medicine, The first Affiliated Hospital of Zhengzhou University, China
2. Radiology Department, Hadassah Hebrew University Medical Center, Jerusalem, Israel
3. Imaging Department, Imperial College London, Hammersmith Hospital Campus, London, United Kingdom
4. II. Medizinische Klinik, Caritas Krankenhaus, Bad Mergentheim, Germany