1. Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan
2. Laboratory of Human Evolutionary Biomechanics, Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
3. Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan
4. Department of Plastic and Reconstructive Surgery, Tokyo Metropolitan Children’s Hospital, Tokyo, Japan
5. Department of Plastic and Reconstructive Surgery, National Center for Child Health and Development, Tokyo, Japan
6. Department of Plastic and Reconstructive Surgery, Osaka City General Hospital, Osaka, Japan.