Quiroz-Moreno, Rocío, et al. “Disc Alterations of Lumbar Spine on Magnetic Resonance Images in Asymptomatic Workers”. Revista Médica Del Instituto Mexicano Del Seguro Social, vol. 46, no. 2, Sept. 2021, pp. 185-90, https://revistamedica.imss.gob.mx/index.php/revista_medica/article/view/2119.