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Ghosh S, Levy ML, Stanley P, Nelson M, Giannotta SL, McComb JG.Ghosh S, et al. Among authors: levy ml.Pediatr Neurosurg. 1999 Jan;30(1):16-22. doi: 10.1159/000028754.Pediatr Neurosurg. 1999.PMID: 10202302Clinical Trial.