1 Reconstructive Surgery and Regenerative Medicine Research Centre, Institute of Life Sciences, Swansea University Medical School, Swansea SA2 8PP, UK; Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK. Electronic address: Stephen.ali@wales.nhs.uk.
2 Reconstructive Surgery and Regenerative Medicine Research Centre, Institute of Life Sciences, Swansea University Medical School, Swansea SA2 8PP, UK; Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK.
3 Swansea University Medical School, Faculty of Medicine, Health and Life Science, Swansea, UK.