Department of Surgery, Ajou University School of Medicine, Suwon, Korea
*Department of Anesthesiology and Pain Medicine, Chonnam National University, Medical School, Gwangju, Korea
Division of Pulmonology, Critical Care and Sleep Medicine, Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea
Department of Pulmonology, Kangreung Asan Medical Center, Gangreung, Korea
§Department of Anesthesiology and Pain Medicine, Hanyang University school of Medicine, Seoul, Korea
ǁDepartment of Anesthesiology and Pain Medicine, Ajou University School of Medicine, Suwon, Korea
¶University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea
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