Table 2. Data collection techniques at each phase of the study with purpose and identification of sample.

	Technique	Purpose	Sample
Phase 1	Individual interviews using semi-structured format	To illicit individual view	Once identified, the stakeholder was purposively approached.
Phase 2	Uni-professional focus groups	To attempt to gain a view of a particular professional group view	Participants from phase 1 were used to sample for phase 2. However, it was important to offer the opportunity to engage with all stakeholders, and therefore non-participation in phase 1 did not preclude joining discussions at phase 2.
Phase 3	Cross-professional focus group	To attempt to develop a consensus on the way forward for the service agreed by all professionals	Participation at phase 3 was about representing the stakeholder group view and negotiating contentious points with other professionals. Participants were drawn from those previously taking part in the study.