%0 Journal Article %T Comparison of Incidences of Intravascular Injection between Medial and Lateral Side Approaches during Traditional S1 Transforaminal Epidural Steroid Injection %A Duck Mi Yoon %A Kyung Bong Yoon %A Sang Jun Park %A Seon Ju Kim %A Shin Hyung Kim %J Archive of "Pain Research & Management". %D 2017 %R 10.1155/2017/6426802 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5406725/