Alejandro R. Jadad, R.Andrew Moore, Dawn Carroll, Crispin Jenkinson, D.John M. Reynolds, David J. Gavaghan, Henry J. McQuay,
Assessing the quality of reports of randomized clinical trials : is blinding necessary? Controlled Clinical Trials. ,vol. 17, pp. 1- 12 ,(1996) ,
10.1016/0197-2456(95)00134-4