Authors: P Tønnesen; P Paoletti; G Gustavsson; M A Russell; R Saracci; A Gulsvik; B Rijcken; U Sawe Journal: Eur Respir J Date: 1999-02 Impact factor: 16.671
Authors: D M Daughton; S A Heatley; J J Prendergast; D Causey; M Knowles; C N Rolf; R A Cheney; K Hatlelid; A B Thompson; S I Rennard Journal: Arch Intern Med Date: 1991-04