Jorge F Ramírez Léon Author

Kai-Uwe Lewandrowski MD
Orthopaedic Surgeon, Centre for Advanced Spinal Surgery of Southern Arizona, Tucson, Arizona, USA

Michael Schubert MD
Orthopaedic Surgeon, Apex Spine Centre, Munich, Germany

Jorge F Ramírez Léon  MD
Professor, Head Orthopaedics and Traumatology, Director of Spine Centre, Clinica Reina Sofia Colsanitas, Bogota, Columbia

Richard G Fessler MD PhD
Professor and Vice Chair of Neurosurgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA