Barboza, J. J., Chambergo-Michilot, D., Pinto-Ruiz, D. F., & Caballero-Alvarado, J. (2021). Critical reading of medical evidence: How to read observational studies?. Revista Del Cuerpo Médico Hospital Nacional Almanzor Aguinaga Asenjo, 13(4), 410–417. https://doi.org/10.35434/rcmhnaaa.2020.134.777