RT Journal Article SR Electronic T1 The Danish study on cost effectiveness in sleep related breathing disorders - a possible example for Europe JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 556 OP 558 DO 10.1136/thoraxjnl-2011-200052 VO 66 IS 7 A1 Ingo Fietze YR 2011 UL http://thorax.bmj.com/content/66/7/556.abstract AB