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Watson PE, McDonald BW.Watson PE, et al. Among authors: mcdonald bw.Matern Child Health J. 2009 Sep;13(5):695-706. doi: 10.1007/s10995-008-0405-6. Epub 2008 Sep 3.Matern Child Health J. 2009.PMID: 18766432
Watson PE, McDonald BW.Watson PE, et al. Among authors: mcdonald bw.Matern Child Health J. 2013 Jul;17(5):959-67. doi: 10.1007/s10995-012-1124-6.Matern Child Health J. 2013.PMID: 23010863