title: Letter to the Editor regarding the article "Mini-open lateral retroperitoneal lumbar spine approach using psoas muscle retraction technique. Technical report and initial results on six patients" by K. Aghayev and F.D. Vrionis: Eur Spine J, 2013. 22(9):p. 2113-9.
authors.affiliation: Schön Klinik München Harlaching, Spine Center, Munich, Germany, cmehren@schoen-kliniken.de.
authors.forename: Christoph
authors.initials: C
authors.lastname: Mehren
authors.forename: Christoph J
authors.initials: CJ
authors.lastname: Siepe
mesh_terms: D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D016658:Psoas Muscles / Q000601:surgery*; D011843:Radiculopathy / Q000601:surgery*; D012187:Retroperitoneal Space / Q000601:surgery*; D013123:Spinal Fusion / Q000379:methods*