ISSUEhttps://thejns.org/view/journals/j-neurosurg/97/1/j-neurosurg.97.issue-1.xmlIssue 12018-10-03https://thejns.org/spine/view/journals/j-neurosurg-spine/97/1/j-neurosurg-spine.97.issue-1.xmlPages 94-972018-10-03https://thejns.org/view/journals/neurosurg-focus/13/1/neurosurg-focus.13.issue-1.xmlSpondylolisthesis2018-10-22