Risk factors for high length of hospital stay and in-hospital mortality in hip fractures in the elderly J. Salvador Marín; F.J. Ferrández Martínez; C. Fuster Such; J.M. Seguí Ripoll; D. Orozco Beltrán; M.C. Carratalá Munuera; J.F. Martínez López; J.C. Marzo Campos;