Burkhardt, Hannah, Pascal Brandt, Jenney Lee, Sierramatice Karras, Paul Bugni, Ivan Cvitkovic, Amy Chen, and William Lober. 2021. “StayHome: A FHIR-Native Mobile COVID-19 Symptom Tracker and Public Health Reporting Tool”. Online Journal of Public Health Informatics 13 (1). https://doi.org/10.5210/ojphi.v13i1.11462.