1. Centre for Public HealthSchool of MedicineDentistry and Biomedical SciencesQueen's University BelfastBelfastNorthern Ireland
2. School of Psychology, Queen's University BelfastBelfastNorthern Ireland
3. National Institute for Mental Health Research, Australian National UniversityCanberraACTAustralia
4. All Ireland Hub for Trials Methodology ResearchUlster UniversityLondonderryNorthern Ireland