TY - JOUR A1 - Hwang, M. A1 - Shrestha, A. A1 - Yazzie, S. A1 - Jackson, M.L. T1 - Preterm birth among American Indian/Alaskan natives in Washington and Montana: Comparison with non-Hispanic Whites Y1 - 2013 DO - 10.1007/s10995-012-1215-4 VL - 17 IS - 10 ER -