the hypothesis of diameter decrease proportional to treatment time was tested with data from 223 patients with radiolucent gallbladder stones up to 20 mm in diameter treated with 7-8 or 14-15 mg.kg-1.day-1 of either ursodiol or chenodiol for 1 year , followed up after 3 , 6 , and 12 months of treatment .
C0008350
gallbladder stones
C0042105
ursodiol