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Valentini, Roberto, Andrea Vacchiano, Andrea Sandri, Dario Regis, Carlo Dall’Oca, و Bruno Magnan. "Fourth Generation Head Fracture in Ceramic-on-polyethylene Bearing After Hip Revision Surgery: A Case Report." Acta Biomed 2020.

Valentini, Roberto, et al. "Fourth Generation Head Fracture in Ceramic-on-polyethylene Bearing After Hip Revision Surgery: A Case Report." Acta Biomed 2020.