RT Journal Article SR Electronic T1 Continuous positive airway pressure was beneficial in mild sleep apnoea-hypopnoea syndrome JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 169 OP 169 DO 10.1136/ebm.4.6.169 VO 4 IS 6 YR 1999 UL http://ebm.bmj.com/content/4/6/169.abstract AB