This study is supported by grants from the NIHR (NIHR: PDF-2014-07-013); Elizabeth Blackwell Institute for Health Research, University of Bristol and the Wellcome Trust Institutional Strategic Support Fund; and Avon Primary Care Research Collaborative (APCRC).

The Chief Investigator on this study is Dr Matthew Ridd.

For further information about the study, please email skinandallergy-research@bristol.ac.uk