Abstract Background Even weeks and months after initial infection, full recovery from a Covid-19 infection is elusive for some pediatric patients. Long Covid now recognized as chronic condition with constellation of lingering health problems. As the long term sequala continue to become apparent, it imperative study this emerging disease in population. Methods The University Minnesota Pediatric ...

This paper is concerned with the statistical analysis of data obtained in studies of the joint action of drugs. The three methods that are compared are illustrated on real data (1), using the statistical package SAS. It is argued that while the results obtained using these methods do not differ substantially, the method allowing for estimating simultaneously all required parameters is to be pre...