Coordination with personnel in partnering recruitment sites for a cohort study in children under 4 years oldRecruitment and retention of children and their families in the study, including assessment administration, tracking and follow upData collection and entry, including collecting biological samples (e.g., saliva, hair), dust and water samples, research device setup and instruction (e.g., activity trackers/home sensors), and entering data into REDcap softwareData cleaning and analysis, assisting with IRB and grant proposals, literature searches and manuscript preparation