1. Participating in core outcome set development via Delphi surveys: qualitative interviews provide pointers to inform guidance. Issue 11 (14th November 2019) Authors: Biggane, Alice M; Williamson, Paula R; Ravaud, Philippe; Young, Bridget Journal: BMJ open Issue: Volume 9:Issue 11(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗