1. Liverpool Centre for Cardiovascular Science, University of Liverpool, Liverpool John Moores University, and Liverpool Heart and Chest Hospital, Liverpool, UK
2. Cardiovascular Health Sciences and Physical Activity Exchange, Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
3. Service user, Wavertree Aquatics Centre, Liverpool, UK
4. Exercise referral practitioner, Wavertree Aquatics Centre, Liverpool, UK
5. Fitness centre area manager, Wavertree Aquatics Centre, Liverpool, UK
6. NHS Liverpool Clinical Commissioning Group, Liverpool, UK