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Surkan PJ, Peterson KE, Hughes MD, Gottlieb BR.Surkan PJ, et al. Among authors: peterson ke.Matern Child Health J. 2006 Jul;10(4):375-83. doi: 10.1007/s10995-005-0056-9.Matern Child Health J. 2006.PMID: 16404681
Surkan PJ, Gottlieb BR, McCormick MC, Hunt A, Peterson KE.Surkan PJ, et al. Among authors: peterson ke.Matern Child Health J. 2012 Jan;16(1):139-48. doi: 10.1007/s10995-010-0729-x.Matern Child Health J. 2012.PMID: 21153759Clinical Trial.