FirmianoG.G.D., FerreiraF.R.D.P., TeixeiraG. de G., OliveiraP.C., RubioR.M. and MoreiraM.E. de C. 2021. Challenges encountered by integrative medicine within the scope of the Unified Health System (SUS): an integrative review. Revista Eletrônica Acervo Científico. 38, (Nov. 2021), e8860. DOI:https://doi.org/10.25248/reac.e8860.2021.