The role of raltegravir alone or combined with lamivudine as PrEP: a phase 2 randomised controlled clinical trial - Fox,J; Herrera,C; Lwanga,J; Lee,M; Else,L; Amara,A; Egan,D; Boffito,M; Shattock,R; Khoo,S; Dickenson,L (WILEY, 2019)