%0 Journal Article %T Efficacy and Safety of Transdermal Buprenorphine versus Oral Tramadol/Acetaminophen in Patients with Persistent Postoperative Pain after Spinal Surgery %A Hak-Sun Kim %A Jae Hyup Lee %A Jin-Hwan Kim %A Jin-Hyok Kim %A Jung-Hee Lee %A Kyu-Yeol Lee %A Woo-Kie Min %A Ye-Soo Park %J Archive of "Pain Research & Management". %D 2017 %R 10.1155/2017/2071494 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5615987/