RT Journal Article SR Electronic T1 Seasonality and attendance at a pulmonary rehabilitation programme JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 634 OP 635 DO 10.1136/thx.2010.153668 VO 66 IS 7 A1 Grace E Walker A1 Cassandra Lee A1 Sarah L Elkin YR 2011 UL http://thorax.bmj.com/content/66/7/634.abstract AB