seventy-eight patients withdrew from therapy , 21 within 6 months of starting cdca ( before their first follow-up cholecystogram ) : the remaining 57 withdrew because of : complications of gallstones ( 11 patients ) , inadequate treatment ( dose and/or duration , 20 patients ) , inappropriate selection or unsuitable stones ( 19 patients ) and resistance to cdca ( 7 patients ) .
C0008350
gallstones
C0006736
stones