1. Congenital defect of the atlas and axis. A cause of misdiagnose when evaluating an acute neck trauma;Caro;Am J Emerg Med,2008
2. Partial bilateral agenesis of the posterior arch of the atlas;Castaño-Duque;Rev Neurol,1997
3. Congenital midline cleft of the posterior arch of atlas: A rare cause of symptomatic cervical canal stenosis;Connor;Eur Radiol,2001
4. Congenital defects of theposterior arch of the atlas: A report of seven cases including an affected mother and son;Currarino;AJNR Am J Neuroradiol,1994
5. A congenital anomaly of the atlas as a diagnostic dilemma: A case report;de Zoete;J Manipulative Physiol Ther,2007