RT Journal Article SR Electronic T1 Is regular oxygen supplementation safe for obese postoperative patients? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 723 OP 727 DO 10.3949/ccjm.87a.19051 VO 87 IS 12 A1 Roop Kaw A1 Anthony G. Doufas YR 2020 UL http://www.ccjm.org/content/87/12/723.abstract AB