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Open-Access Journal
Opinion Review
Observational Study
Justin van Loon, Daniël Hoornenborg, Harm M van der Vis, Inger N Sierevelt, Kim TM Opdam, Gino MMJ Kerkhoffs, Daniël Haverkamp 
World J Orthop 12(1):14-23. Published online Jan 18, 2021. doi: 10.5312/wjo.v12.i1.14
Meta-Analysis
Case Report
Adriano Braile, Giuseppe Toro, Annalisa De Cicco, Antonio Benedetto Cecere, Fabio Zanchini, Alfredo Schiavone Panni 
World J Orthop 12(1):51-55. Published online Jan 18, 2021. doi: 10.5312/wjo.v12.i1.51