Box 1.

Inclusion criteria for the three key healthcare professionals — GPs, practice-based pharmacists, and community pharmacists

Criteria GPs working with PBPs in their general practices. PBPs employed (full time or part time) in one of 17 GP federations in NI (see Supplementary Information S5 for further information about the federations and links with PBPs). CPs who had most contact with general practices in which the recruited GPs and PBPs worked.

CP = community pharmacist. NI = Northern Ireland. PBP = practice-based pharmacist.