Answer to the Letter to the Editor of LJ Castro-Alves et al. concerning "Comparative study of the efficacy of transdermal buprenorphine patches and prolonged-release tramadol tablets for postoperative pain control after spinal fusion surgery: a prospective, randomized controlled non-inferiority trial" by HJ Kim et al. (2017) Eur Spine J;26:2961-2968
Eur Spine J. 2018 Nov;27(11):2884.
doi: 10.1007/s00586-018-5785-8.
Epub 2018 Oct 10.
1 Spine Center and Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 166 Gumi-ro, Bundang-gu, Sungnam-si, Gyeonggi-do, 463-707, Republic of Korea. oshjkim@gmail.com.