Freitas VM de, Menezes FG de, Antonialli MMS, Nascimento JWL. Use of phosphodiesterase-5 inhibitors by college students . Rev. saúde pública [Internet]. 2008 Oct. 1 [cited 2024 May 3];42(5):965-7. Available from: https://www.revistas.usp.br/rsp/article/view/32521