Controlled clinical trials in cystic fibrosis — are we doing better? Tracy Ann Briggs, Mandy Bryant, Rosalind L. Smyth Journal of Cystic Fibrosis Volume 5, Issue 1, Pages 3-8 (January 2006) DOI: 10.1016/j.jcf.2005.09.005 Copyright © 2006 Terms and Conditions
Fig. 1 The number of randomised controlled trials and clinical controlled trials in cystic fibrosis published between 1961 and 2002. Journal of Cystic Fibrosis 2006 5, 3-8DOI: (10.1016/j.jcf.2005.09.005) Copyright © 2006 Terms and Conditions