Affiliation: | Woo-Joon Hong, Jung-Kil Lee, Jong-Hwan Hong, Moon-Soo Han, Department of Neurosurgery, Chonnam National University Hospital & Medical School, Gwangju 61469, South KoreaShin-Seok Lee, Department of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju 61469, South Korea |