title: A VARIATION OF THE ATLAS. ROENTGENOLOGIC INCIDENCE OF A BRIDGE OVER THE GROOVE OF THE ATLAS FOR THE VERTEBRAL ARTERY.
mesh_terms: D000715:Anatomy; D001270:Cervical Atlas; D006652:Histological Techniques; D006653:Histology; D006801:Humans; D015994:Incidence; D011859:Radiography; D014711:Vertebral Artery
keywords: ANATOMY; ATLAS; HISTOLOGY; RADIOGRAPHY