RT Journal Article SR Electronic T1 Letter to the Editor Regarding Anterior Lumbar Interbody Fusion With Cement Augmentation Without Posterior Fixation to Treat Isthmic Spondylolisthesis in an Osteopenic Patient—A Surgical Technique, by Cyriac et al. JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP 377 OP 377 DO 10.14444/6051 VO 13 IS 4 A1 Gaston Camino Willhuber YR 2019 UL http://ijssurgery.com//content/13/4/377.abstract AB