8OHDAN H, OSHIRO H, YAMAMOTO Y, et al. Bacteriology investigation of bile in patients with cholelithiases [J]. Surgery Today,1993,23:390 -633.
9STEWART L, SMITH A L, ELLEGRINI C A,et al. Pigment gallstones form as a composite of bacteria microcolonies and pigment solids[J]. Am Surg, 1987,206:242 -249.
10PORTZE P L L, LAFONT H, DOMINGO N, et al. Composition and immunofluorescence studies of biliary sludge in patients with cholesterol or mixed gallstones [J]. J Hepatology, 2000, 33 ( 3 ) :352 - 360.
