RT Journal Article SR Electronic T1 Posture in Thoracic Surgery JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 161 OP 165 DO 10.1136/thx.3.3.161 VO 3 IS 3 A1 Brown, A. I. Parry YR 1948 UL http://thorax.bmj.com/content/3/3/161.abstract AB