1. Department of Radiology, Viet Duc Hospital, Ha Noi, Vietnam
2. Department of Radiology, Hanoi Medical University, Ha Noi, Vietnam
3. Department of Radiology, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
4. Department of Radiology, Children’s Hospital 2, Ho Chi Minh City, Vietnam
5. Department of Radiology, Bach Mai Hospital, Ha Noi, Vietnam