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Lassiter HA, Speranza MJ, Hall RT, Meade V, Christensen RD, Parker CJ.Lassiter HA, et al. Among authors: christensen rd.J Perinatol. 1990 Mar;10(1):27-31.J Perinatol. 1990.PMID: 2107285
Calhoun DA, Sullivan SE, Lunøe M, Du Y, Christensen RD.Calhoun DA, et al. Among authors: christensen rd.J Perinatol. 2000 Apr-May;20(3):166-71. doi: 10.1038/sj.jp.7200332.J Perinatol. 2000.PMID: 10802841
Juul SE, Christensen RD.Juul SE, et al. Among authors: christensen rd.J Perinatol. 2003 Sep;23(6):493-7. doi: 10.1038/sj.jp.7210961.J Perinatol. 2003.PMID: 13679938Clinical Trial.