Independence is crucial for the quality and credibility of scientific recommendations and guidelines. The composition of advisory committees requires a full understanding of the relationships and interests of prospective committee members. In addition to financial relationships, intellectual interests, professional interests, and reputation may also play a role. In addition to preventing conflicts of interest among committee members, precautions are also required during the review and authorisation stages of draft recommendations. We describe which potential or perceived conflicts of interests may occur, and how quality and independence of the advisory process can be safeguarded.