St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, Tower Wing, 9th Floor, Guy's Hospital, London, SE1 9RT, United Kingdom. silvia.crescioli@kcl.ac.uk.
NIHR Biomedical Research Centre at Guy's and St. Thomas's Hospitals and King's College London, King's College London, London, United Kingdom. silvia.crescioli@kcl.ac.uk.