Quevedo-Tejero, Elsy del Carmen, et al. “Hip Fracture in Older Adults: Prevalence and Costs in Two Hospitals. Tabasco. México. 2009”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 28, no. 3, Sept. 2011, https://doi.org/10.17843/rpmesp.2011.283.521.