Barra, Cristóbal, Eduardo Torres M, and Arturo Z. Vásquez-Parraga. “Training and History of Patient Loyalty in the Context of Private Medical Services”. Estudios de Administración 18, no. 2 (December 31, 2011): 49–78. Accessed May 8, 2024. https://estudiosdeadministracion.uchile.cl/index.php/EDA/article/view/56377.