Authors: E Stöcklin; F Gudat; G Krey; U Dürmüller; M Gasser; M Schmid; G Stalder; L Bianchi Journal: Hepatology Date: 1981 May-Jun Impact factor: 17.425
Authors: M Rizzetto; G Verme; S Recchia; F Bonino; P Farci; S Aricò; R Calzia; A Picciotto; M Colombo; H Popper Journal: Ann Intern Med Date: 1983-04 Impact factor: 25.391