A comparative study of efficacy and safety of tramadol in male versus female patients suffering from pain. International Journal of Research in Pharmacology & Pharmacotherapeutics, [S. l.], v. 4, n. 1, p. 106–112, 2021. DOI: 10.61096/ijrpp.v4.iss1.2015.106-112. Disponível em: https://ijrpp.com/ijrpp/article/view/154. Acesso em: 15 apr. 2026.