Periprosthetic Joint Infection Prophylaxis in the Elderly after Hip Hemiarthroplasty in Proximal Femur Fractures : Insights and Challenges - Rodriguez-Pardo, Dolors (Universitat Autònoma de Barcelona. Departament de Medicina) ; Escolà-Vergé, Laura (Study Group on Osteoarticular Infections of the Spanish Society of Clinical Microbiology) ; Sellarès-Nadal, Júlia (Universitat Autònoma de Barcelona. Departament de Medicina) ; Corona Pérez-Cardona, Pablo S (Hospital Universitari Vall d'Hebron) ; Almirante Gragera, Benito (Universitat Autònoma de Barcelona. Departament de Medicina) ; Pigrau, Carlos (Study Group on Osteoarticular Infections of the Spanish Society of Clinical Microbiology)