Bell JF, Zimmerman FJ, Diehr PK. Maternal work and birth outcome disparities. Matern Child Health J. 2008 Jul;12(4):415-26. Epub 2007 Aug 15.
Bell JF, Zimmerman FJ, Diehr PK. Maternal work and birth outcome disparities. Matern Child Health J. 2008 Jul;12(4):415-26. Epub 2007 Aug 15.