Risk Factors for Ambulatory Surgery Conversion to Extended Stay Among Patients Undergoing One-level or Two-level Posterior Lumbar Decompression. - Dodo, Yusuke; Okano, Ichiro; Kelly, Neil A.; Sanchez, Leonardo A.; Haffer, Henryk; Muellner, Maximilian; Chiapparelli, Erika; Oezel, Lisa; Shue, Jennifer; Lebl, Darren R.; Cammisa, Frank P.; Girardi, Federico P.; et al. (Spine (03622436), 2023)