Singh M, Tian C, Hyman JB, Siddiqui S, Auckley D, Khanna AK, Wong J, Englesakis M, Singh KP, Ramachandran SK. Level of Evidence of Guidelines for Perioperative Management of Patients With Obstructive Sleep Apnea: An Evaluation Using the Appraisal of Guidelines for Research and Evaluation II Tool. Anesth Analg. 2023 Feb 01; 136(2):262-269.