Studencnik G, Ebner F, Studencnik F, Feigl G. The influence of torsion of the spine on techniques of facet joint blocks without help of visualization. BioMedSurg [Internet]. 2017 Sep. 30 [cited 2024 Apr. 20];1(3):109-16. Available from: http://biomedsurg.com/ojs300/index.php/BioMedSurg/article/view/58