1. US Department of Health and Human Services Food and Drug Administrator Center for Drug Evaluation and Research http://www.fda.gov/ohrms/dockets/ac/98/transcpt/3462t1.pdf
2. US Department of Health and Human Services Food and Drug Administrator Center for Drug Evaluation and Research http://www.fda.gov/ohrms/dockets/ac/99/transcpt/3490t2.pdf
3. Dyspnea as an end point in clinical trials of therapies for acute decompensated heart failure;Teerlink;Am Heart J,2003
4. A proposal to standardize dyspnoea measurement in clinical trials of acute heart failure syndromes: the need for a uniform approach;Pang;Eur Heart J,2008
5. Physician vs patient assessment of dyspnea during acute decompensated heart failure;Smithline;Congest Heart Fail,2010