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Steinbach M, Clark RH, Kelleher AS, Flores C, White R, Chace DH, Spitzer AR; Pediatrix Amino-Acid Study Group.Steinbach M, et al. Among authors: chace dh.J Perinatol. 2008 Feb;28(2):129-35. doi: 10.1038/sj.jp.7211889. Epub 2007 Dec 6.J Perinatol. 2008.PMID: 18059467Clinical Trial.