1. Department of Radiology, Okinawa Prefectural Nanbu Medical Center & Children’s Medical Center, Okinawa, Japan
2. Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan
3. Department of Radiology, Nanbu Tokushukai Hospital, Okinawa, Japan
4. Division of Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology (Second Department of Internal Medicine), Graduate School of Medicine, University of the Ryukyus, Nishihara, Japan