Breaking through the glass ceiling effect of high-grade clinical evidence creation in orthopaedics & trauma Kai-Uwe Lewandrowski; Jorge Felipe Ramírez León; Álvaro Dowling; Manuel Rodriguez Garcia; José Gabriel Rugeles; Carolina Ramirez; Alfonso Garcia; Jose Valerio; Paulo Sérgio Teixeira de Carvalho; Luis Miguel Duchén Rodríguez; Jaime Moyano; Mario Herrera; Nicolás Prada; Mauricio Zuluaga; Anthony Yeung;