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This Funding Opportunity Announcement (FOA) encourages innovative research to enhance the quality of measurements of dietary intake and physical activity. Applications submitted under this FOA are encouraged to include development of: novel assessment approaches; better methods to evaluate instruments; assessment tools for culturally diverse populations or various age groups, including children and older adults; improved technology or applications of existing technology; statistical methods/modeling to improve assessment and/or to correct for measurement errors or biases; methods to investigate the multidimensionality of diet and physical activity behavior through pattern analysis; or integrated measurement of diet and physical activity along with the environmental context of such behaviors.

The purpose of this FOA is to continue support for the Pediatric HIV/AIDS Cohort Study (PHACS) which addresses the clinical course of perinatally acquired HIV infection in adolescents and young adults and the oral and systemic health consequences of in utero and infant exposure to antiretroviral therapy in cohorts of children in the United States.