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Nauer, C B; Kellner-Weldon, F; Von Allmen, G; Schaller, D; Gralla, J (2009). Effective doses from scan projection radiographs of the head: impact of different scanning practices and comparison with conventional radiography. American journal of neuroradiology AJNR, 30(1), pp. 155-9. Oak Brook, Ill.: American Society of Neuroradiology 10.3174/ajnr.A1293