1. Department of Psychology, University of Roehampton, London, UK
2. Robertson Centre for Biostatistics, University of Glasgow, Glasgow, UK
3. Mosteiro da Santa Cruz, Santa Cruz, Brazil
4. School of Psychological Sciences & Health, University of Strathclyde, Glasgow, UK
5. Independent Consultant, Newcastle upon Tyne, UK
6. Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK