APA

Pieper C. C., Groetz S. F., Nadal J., Schild H. H. & Niggemann P. D. (20150114). Radiographic evaluation of ventral instability in lumbar spondylolisthesis: do we need extension radiographs in routine exams?. : European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society.

Chicago

Pieper Claus Christian, Groetz Simon Frederik, Nadal Jennifer, Schild Hans Heinz and Niggemann Pascal Dominique. 20150114. Radiographic evaluation of ventral instability in lumbar spondylolisthesis: do we need extension radiographs in routine exams?. : European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society.

Harvard

Pieper C. C., Groetz S. F., Nadal J., Schild H. H. and Niggemann P. D. (20150114). Radiographic evaluation of ventral instability in lumbar spondylolisthesis: do we need extension radiographs in routine exams?. : European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society.

MLA

Pieper Claus Christian, Groetz Simon Frederik, Nadal Jennifer, Schild Hans Heinz and Niggemann Pascal Dominique. Radiographic evaluation of ventral instability in lumbar spondylolisthesis: do we need extension radiographs in routine exams?. : European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society. 20150114.