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Bloomfield EL, Porembka DT, Ebrahim ZY, Grimes-Rice M, Secic M, Little JR, Lockrem JD.Bloomfield EL, et al. Among authors: lockrem jd.J Neurosurg Anesthesiol. 1996 Apr;8(2):101-10. doi: 10.1097/00008506-199604000-00001.J Neurosurg Anesthesiol. 1996.PMID: 8829555Clinical Trial.