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Timing of surgery for hip fracture and in-hospital mortality.
Librero J, Peiró S, Leutscher E, Merlo J, Bernal-Delgado E, Ridao M, Martínez N Sanfélix-Gimeno G Timing of surgery for hip fracture and in-hospital mortality. A retrospective population-based cohort study in the Spanish National Health System. BMC Health Services Research 2012; 12:15