RT Journal Article SR Electronic T1 Chemsex, sexual behaviour and STI-PrEP use among HIV-PrEP users during the COVID-19 pandemic in Brighton, UK JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP sextrans-2021-055216 DO 10.1136/sextrans-2021-055216 A1 Miriam Ringshall A1 Richard Cooper A1 Waseem Rawdah A1 Sean Perera A1 Alan Bannister A1 Kayleigh Nichols A1 Colin Fitzpatrick A1 Daniel Richardson YR 2021 UL http://sti.bmj.com/content/early/2021/08/16/sextrans-2021-055216.abstract AB