OFFICE, Editorial. St. John’s wort (Hypericum perforatum) and warfarin: Dangerous liaisons!. Turkish Journal of Gastroenterology, [S. l.], v. 22, n. 1, p. 115–115, 2011. DOI: 10.4318/tjg.2011.0175. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1870. Acesso em: 1 jan. 2026.