1. University Hospital of Wales, Heath
Park, Cardiff, CF14 4XW, UK.
2. Princess Royal University Hospital, King’s
College Hospital NHS Foundation Trust, BR6
8ND, UK.
3. West Wales General Hospital, Dolgwili
Road, Carmarthen, SA31
2AF, UK.
4. Morriston Hospital, Swansea, SA6
6NL, UK.