Retraction Retraction: Limited post-operative dexamethasone use does not affect lumbar fusion: a single institutional experience Owoicho Adogwa, Victoria D. Vuong, Daniel T. Lilly, Shyam A. Desai, Ryan Khanna, Shahjehan Ahmad, Josha Woodward, Syed Khalid, Joseph Cheng Abstract Retraction to: J Spine Surg 2018;4:254-259