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Pieper CH, van Gelderen WF, Smith J, Kirsten GF, Möhrcken S, Gie RP.Pieper CH, et al. Among authors: van gelderen wf.Pediatr Radiol. 1995;25(3):198-200. doi: 10.1007/BF02021534.Pediatr Radiol. 1995.PMID: 7644302