The control blood samples were useful for external quality assessment in the Netherlands. The participants' performance with the CoaguChek XS system improved with time, demonstrating the value of external quality assessment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.