1. Department of Neurosurgery, Armed Forces Capital Hospital, Seongnam, Korea.
2. Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea.
3. Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Korea.
4. Endocrine Research Institute, Yonsei University College of Medicine, Seoul, Korea.
5. Pituitary Tumor Center, Severance Hospital, Seoul, Korea.