1. Department of Perinatology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
2. Department of Paediatric Radiology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
3. Department of Paediatric Neurology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands
4. Department of Neonatology, Kanagawa Children's Medical Center, Mutsukawa, Minami-ku, Yokohama, Japan
5. Department of Radiology, Kanagawa Children's Medical Center, Mutsukawa, Minami-ku, Yokohama, Japan
6. Department of Radiology, Tokai University School of Medicine, Shimokasuya, Isehara, Japan