RT Journal Article SR Electronic T1 Sudden hypoxia during knee surgery JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 401 OP 409 DO 10.3949/ccjm.79a.09129 VO 79 IS 6 A1 Galway, Ursula A. A1 Gugliotti, David YR 2012 UL http://www.ccjm.org/content/79/6/401.abstract AB