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Moyer CA, Sonnad SS, Garetz SL, Helman JI, Chervin RD.Moyer CA, et al. Among authors: helman ji.Sleep Med. 2001 Nov;2(6):477-91. doi: 10.1016/s1389-9457(01)00072-7.Sleep Med. 2001.PMID: 14592263
Morag Y, Morag-Hezroni M, Jamadar DA, Ward BB, Jacobson JA, Zwetchkenbaum SR, Helman J.Morag Y, et al.Radiographics. 2009 Nov;29(7):1971-84. doi: 10.1148/rg.297095050.Radiographics. 2009.PMID: 19926757Review.