1. Department of Neurosurgery, Incheon St. Mary’s Hospital, College of Medicine The Catholic University of Korea Incheon Republic of Korea
2. Biostatistics Collaboration Unit, Department of Biomedical Systems Informatics Yonsei University College of Medicine Seoul Republic of Korea
3. Department of Neurosurgery Myong‐Ji St. Mary’s Hospital Seoul Republic of Korea
4. Department of Neurosurgery, Uijeongbu St. Mary’s Hospital. College of Medicine The Catholic University of Korea Gyeonggi‐do Republic of Korea
5. Department of Neurosurgery, Eunpyeong St. Mary’s Hospital, College of Medicine The Catholic University of Korea Seoul Republic of Korea
6. Department of Neurosurgery, Bucheon St. Mary’s Hospital, College of Medicine The Catholic University of Korea Gyeonggi‐do Republic of Korea
7. Department of Neurosurgery Naeun Hospital Incheon Republic of Korea
8. Department of Neurosurgery, St. Vincent’s Hospital, College of Medicine The Catholic University of Korea Gyeonggi‐do Republic of Korea
9. Department of Neurosurgery, Seoul St. Mary’s Hospital, College of Medicine The Catholic University of Korea Seoul Republic of Korea
10. Department of Neurosurgery, Daejeon St. Mary’s Hospital, College of Medicine The Catholic University of Korea Daejeon Republic of Korea