A branched methoxy 40 kDa polyethylene glycol (PEG) moiety optimizes the pharmacokinetics (PK) of peginterferon α-2a (PEG-IFN) and may explain its enhanced efficacy in chronic hepatitis C (CHC) (Abst) - Algranati,N.E.; Sy,S.; Modi,M. (Hepatology, 1999)