Age Dependency of Regional Impedance Indices Regardless of Clinical Stage in Patients with Cirrhosis of the Liver - Berzigotti, A.; Castaldini, N.; Rossi, V.; Magalotti, D.; Tiani, C.; Zappoli, P.; Zoli, M. (Ultraschall in der Medizin - European Journal of Ultrasound, 2009)