Background: During the course of an epidemic of a potentially fatal disease. it is difficult to accurately estimate the case fatality rate (CFR) because many calculation methods do not account for the delay between case confirmation and disease outcome. Taking the coronavirus disease-2019 (COVID-19) as an example. this study aimed to develop a new method for CFR calculation while the ... https://allfixelectricales.shop/product-category/electric-drill-carbon-brushes/