Salazar-Blandón, Diego Alejandro, and Beatriz Elena Ospina-Rave. “Critical Thinking Level of Undergraduate Nursing Students from First and Last Semesters in a University of Medellín-Colombia”. Universidad Y Salud, vol. 21, no. 2, Apr. 2019, pp. 152-8, doi:10.22267/rus.192102.149.