2 Reconstructive Surgery and Regenerative Medicine Research Group, Institute of Life Sciences 2, Heol Maes Eglwys, Swansea University, UK; Welsh Centre for Burns and Plastic Surgery, Heol Maes Eglwys, Morriston Hospital, Swansea, UK.
3 Brisbane Northside Emergency Centre, Rode Road, Queensland, Australia.
4 Reconstructive Surgery and Regenerative Medicine Research Group, Institute of Life Sciences 2, Heol Maes Eglwys, Swansea University, UK; Welsh Centre for Burns and Plastic Surgery, Heol Maes Eglwys, Morriston Hospital, Swansea, UK. Electronic address: iainwhitaker@fastmail.fm.