Digital processing and differentiation of the ultrasound records of the liver echogenity in patients with not alcoholic fatty liver disease (NAFLD) - Nováková, Božena; Tuma, J; Karascakova, A; Mizlova, G; Solcova, D; Tkáč, Ivan; Javorský, Martin; Gombošová, Katarína; Jarčuška, Pavol; Kuchta, Milan (Česká a slovenská gastroenterologie a hepatologie, 2006)