Institution: | .Service of Traumatology and Orthopaedic Surgery, Hospital ”Princesa de España”, University of Jaén, Jaén, Spain, , , , ES ;.Service of Traumatology and Orthopaedic Surgery, Hospital ”La Paz”, Madrid, Spain, , , , ES ;.Service of Traumatology, Hospital Torrecárdenas, Almería, Spain, , , , ES ;.Department of Bioestatistics, Faculty of Medicine, University of Granada, Granada, Spain, , , , ES |