title: Importance of the negative clinical trial: advancing the field through failure.
authors.forename: Gilbert L
authors.initials: GL
authors.lastname: Raff
authors.forename: Allen J
authors.initials: AJ
authors.lastname: Taylor
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002986:Clinical Trials as Topic; D017023:Coronary Angiography / Q000379:methods*; D004632:Emergency Medical Services / Q000379:methods*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D036542:Tomography, Spiral Computed / Q000379:methods*