RT Journal Article SR Electronic T1 Is pulmonary arterial impedance affected by breathing? JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1933 OP 1934 DO 10.1183/09031936.97.10081933 VO 10 IS 8 A1 P Castiglioni A1 M Di Rienzo A1 M Morpurgo YR 1997 UL http://erj.ersjournals.com/content/10/8/1933.abstract AB