Uncovering negative results: Introducing an open access journal “Journal of Pharmaceutical Negative Results”. Journal of Pharmaceutical Negative Results, [S. l.], v. 1, n. 1, p. 1–3, 2010. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/4.. Acesso em: 22 jun. 2026.