RT Journal Article SR Electronic T1 An 85-year-old woman with respiratory failure and positional hypoxemia JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 349 OP 354 DO 10.3949/ccjm.83a.15079 VO 83 IS 5 A1 Alpana Senapati A1 Hardeep Rai A1 Abhijit Duggal YR 2016 UL http://www.ccjm.org/content/83/5/349.abstract AB