RT Journal Article SR Electronic T1 Should I suspect obstructive sleep apnea if a patient has hard-to-control hypertension? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 419 OP 421 DO 10.3949/ccjm.83a.15112 VO 83 IS 6 A1 Harneet K. Walia YR 2016 UL http://www.ccjm.org/content/83/6/419.abstract AB