Optimising the Delphi survey method during core set development: The impact of summarised feedback on stakeholders' prioritisation of core data items and consensus. - Chalmers, Katy A.; Coulman, Karen; Blazeby, Jane M.; Dixon, John; Kow, Lilian; Liem, Ronald; Pournaras, Dimitri J.; Ottosson, Johan; Welbourn, Richard; Brown, Wendy; Avery, Kerry N. L. (PLoS ONE, 2026)