The goal of this NOFO is to support doctoral candidates studying high-priority areas of child health for the completion of their doctoral dissertation research project. This NOFO seeks to advance research in child health by stimulating the use of Environmental Influences on Child Health (ECHO) Cohort data by doctoral students in relevant scientific areas. This RFA will provide students working on dissertations the opportunity to access the ECHO data within the NICHD Data and Specimen Hub (DASH) repository. ECHOs DASH dataset integrates deidentified longitudinal data from more than 41,000 participants across the U.S. Prenatal and child exposure data include physical, chemical, social, behavioral, and biological factors. ECHOs five primary pediatric outcome areas are pre-, peri-, and postnatal outcomes, upper and lower airway, obesity, neurodevelopment, and positive health. This award will facilitate the entry of promising new investigators into the field of early environmental exposures and child health research, enhancing the pool of highly talented researchers. NIH encourages applications particularly from those who can contribute to diversifying the research workforce as described in the Notice of NIH's Interest in Diversity (NOT-OD-20-031).