1. Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA.
2. Department of Epidemiology, University of Washington, Seattle, WA, USA.
3. Prevention Research Center, Pacific Institute for Research and Evaluation, Berkeley, CA, USA.
4. Research Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA.
5. Center for Behavioral Health Research and Services, University of Alaska Anchorage, Anchorage, AK, USA.
6. Head Start Program, Rural Alaska Community Action Program, Inc., Anchorage, AK, USA.