1. Clinical Health Psychology Service, Hywel Dda University Health Board, Carmarthen, UK
2. Community Heart Failure Service, Hywel Dda University Health Board, Carmarthen, UK
3. Cardiology Service, Hywel Dda University Health Board, Carmarthen, UK
4. Aberystwyth University, Aberystwyth, UK conflicts of interest There are no conflicts of interest to declare