Before revision:  In this paper , confirmed cases of healthcare workers are considered as accurately small samples to analyze the impact of under-reporting on the spatiotemporal distribution of COVID-19 from three perspectives , namely : parameter estimation, spatiotemporal correlation, and spatiotemporal lag.
After revision:  In this paper , confirmed cases of healthcare workers are considered as accurately small samples to analyze the impact of under-reporting on the spatiotemporal distribution of COVID-19 from three perspectives : parameter estimation, spatiotemporal correlation, and spatiotemporal lag.