Different guidelines for pre-exposure prophylaxis (PrEP) eligibility estimate HIV risk differently: an incidence study in a cohort of HIV-negative men who have sex with men, Portugal, 2014–2018 Meireles, Paula and Plankey, Michael and Rocha, Miguel and Brito, João and Mendão, Luís and Barros, Henrique, Eurosurveillance, 25, 1900636 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.28.1900636