de Souza Galdino, A., Ferreira Siqueira, D. e Guardia, G. 2023. The importance of after-sales in the medicines sector in the city of Campina Grande-PB. International Seven Journal of Multidisciplinary. 2, 5 (nov. 2023), 1238–1246. DOI:https://doi.org/10.56238/isevmjv2n5-032.