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Susin LR, Giugliani ER, Kummer SC, Maciel M, Simon C, da Silveira LC.Susin LR, et al.Birth. 1999 Sep;26(3):149-56. doi: 10.1046/j.1523-536x.1999.00149.x.Birth. 1999.PMID: 10655814Clinical Trial.