Sexual risk reduction interventions for patients attending sexual health clinics: a mixed-methods feasibility study di Carina King, Carrie Llewellyn, Maryam Shahmanesh, Charles Abraham, Julia Bailey, Fiona Burns, Laura Clark, Andrew Copas, Alison Howarth, Gwenda Hughes, Cath Mercer, Alec Miners, Alex Pollard, Daniel Richardson, Alison Rodger, Anupama Roy, Richard Gilson