Siepe Christoph J, Sauer Daniel, Michael Mayer H
Spine Center, Schön Clinic Munich Harlaching, Harlachinger Str. 51, 81547, Munich, Germany.
Academic Teaching Hospital and Spine Research Institute of the Paracelsus Medical University (PMU), Salzburg, Austria.
Eur Spine J. 2018 Jul;27(Suppl 4):563-565. doi: 10.1007/s00586-018-5656-3.