1. Henan Key Laboratory of Child Brain Injury Third Affiliated Hospital and Institute of Neuroscience Zhengzhou University Zhengzhou 450052China
2. Neonatal Intensive Care Unit, Zhengzhou Key Laboratory of Newborn Disease Research Children's Hospital Affiliated to Zhengzhou University Zhengzhou 450018China
3. Center for Brain Repair and Rehabilitation Institute of Neuroscience and Physiology Sahlgrenska Academy Gothenburg University Gothenburg 40530Sweden
4. Department of Women's and Children's Health Karolinska Institutet Stockholm 2995Sweden