9Schaffner F Nonalcoholic fatty liver In:Haubrich W,Schaffner F,Beek JE eds,Bocus Gastroenterology.5th ed W B Saunders Company,1995,Volume 3,2246-2254.
10Suzuki K,Hayashi N,Sasaki Y,et al.Dependence of ultrasonic attenuation of liver on pathologie fat and fibrosis,examine with experimental fatty liver and liver fibrosis models.Ultrasound Med Biol,1992,18(8):657.