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Halpern EJ, Premkumar A, Mullen DJ, Ng CC, Levy HM, Newhouse JH, Amis ES Jr, Sanders LM, Mun IK.Halpern EJ, et al. Among authors: newhouse jh.Invest Radiol. 1990 Jun;25(6):703-7. doi: 10.1097/00004424-199006000-00015.Invest Radiol. 1990.PMID: 2354934