[Association between ABO blood groups and gallbladder calculi: a dissenting opinion]

A group of 174 hospital patients was studied to discover the incidence of ABO blood groups in comparison, with a similar analysis of a representative sample (1872 people) of the Amiata Community as a whole. Though this type of sampling is open to criticism, it is still felt that there is no statistical proof that one or more of these blood groups is more prone to gall stones, at least in Amiata.