STEEN, Johan; LOEYS, Tom; MOERKERKE, Beatrijs; VANSTEELANDT, Stijn. medflex: An R Package for Flexible Mediation Analysis using Natural Effect Models. Journal of Statistical Software, [S. l.], v. 76, n. 11, p. 1–46, 2017. DOI: 10.18637/jss.v076.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v076i11. Acesso em: 9 apr. 2025.