I think, at one level, the overall objective of the study or trial will help inform what stakeholders and what type of relationship you are seeking with each stakeholder. Through such activities as community mapping one might get to learn in-depth about the research site community, who are the influential people, what organisations and what services do they provide, what issues or challenges the community is confronted with, who is doing what already differently or similar to what you want to do. So for us the basis is what the the donors are giving money for, what the study wants to achieve and what we learn from the research site communities that help the research team determine the importance of involving one stakeholder over the other.