The utility of peak flow, symptom scores, and β-agonist use as outcome measures in asthma clinical research

Frank T. Leone, Elizabeth A. Mauger, Stephen P. Peters, Vernon M. Chinchilli, James E. Fish, Homer A. Boushey, Reuben M. Cherniack, Jeffrey M. Drazen, John V. Fahy, Jean Ford, Elliot Israe, Stephen C. Lazarus, Robert F. Lemanske, Richard J. Martin, Stephen J. McGeady, Christine Sorkness, Stanley J. Szefler