title: Erratum to: Clinical relevance of conus medullaris and dural sac termination level with special reference to sacral hiatus apex: anatomical and MRI radiologic study.
authors.affiliation: Anatomy Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt. ashrafnaeem2013@gmail.com.
authors.forename: Ashraf Youssef
authors.initials: AY
authors.lastname: Nasr