RT Journal Article SR Electronic T1 Panic attacks in COPD and the somato-psycho-somatic feedback JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 457 OP 457 DO 10.1183/09031936.00045310 VO 36 IS 2 A1 F. Kummer YR 2010 UL http://erj.ersjournals.com/content/36/2/457.1.abstract AB