Outcome measures for clinical trials in cystic fibrosis J Pediatr Ramsey BW, Boat T, Accurso F, Bennett W, Boucher R, Brody A, Crystal R, Cutting G, Davis P, Dorkin H, Fleming T. Kaplan R, Knowles M, Konstan M, Laube B, McElvaney G, Morgan W, Moss R, Orenstein R, Pencharz P, Rosenstein B, Schidlow D, Smith A, Spino M, Stallings V, Stecenko A, Terrin M, Weatherly M, Wilmott R, Wilson C, Wood 1994; 124: 177-92