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Stengel, Dirk, et al. Resorbable Screws Versus Pins for Optimal Transplant Fixation (SPOT) in Anterior Cruciate Ligament Replacement With Autologous Hamstring Grafts: Rationale and Design of a Randomized, Controlled, Patient and Investigator Blinded Trial [ISRCTN17384369]. BioMed Central, 2005.

Stengel, Dirk, et al. Resorbable Screws Versus Pins for Optimal Transplant Fixation (SPOT) in Anterior Cruciate Ligament Replacement With Autologous Hamstring Grafts: Rationale and Design of a Randomized, Controlled, Patient and Investigator Blinded Trial [ISRCTN17384369]. BioMed Central, 2005.