N. E. Rangel-Domínguez, L. Ascencio-Huertas, R. E. Ornelas-Mejorada, S. R. Allende-Pérez, E. Landa-Ramírez, and J. J. Sánchez-Sosa, “Effects of problem solving therapy on self-care behaviors by primary caregivers of terminal cancer patients: A pilot study”, Psicooncología, vol. 10, no. 2-3, pp. 365–376, Nov. 2013, doi: 10.5209/rev_PSIC.2013.v10.n2-3.43455.