1. 059 Nonrandomised Studies as a Source of Complementary, Sequential or Replacement Evidence for Randomised Controlled Trials in Systematic Reviews and Guidelines. (15th August 2013) Authors: Schünemann, H; Tugwell, P; Reeves, B; Akl, E; Santesso, N; Spencer, F; Shea, B; Wells, G; Helfand, M Journal: BMJ quality & safety Issue: Volume 22(2013)Supplement 1 Page Start: A31 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗