Negative Imaginary (NI) systems theory is an emerging branch of control theory that focuses on the frequency response characteristics of dynamical systems. At its core, the theory exploits conditions ...
A Facebook post with a picture of a positive control for a COVID-19 test misleadingly describes it as a positive test kit and suggests it may be “preloaded with the virus”. The post (here) shows a ...
More than half of patients who suffer from chronic hepatitis B have the e antigen (HBeAg)-negative form of the disease. Even after many years of antiviral treatment with nucleos(t)ide analogues (NUC), ...
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