C. A. . Galvez-Lopera and V. . Naranjo-Quintero, “Human Pain: A Response of Medical Sciences and some Considerations concerning Spiritual Pain for the Training of Palliative Care Professionals”, Esc, vol. 25, no. 55, pp. 419–436, Dec. 2017, doi: 10.18566/escr.v25n55.a04.