A newspaper article reported on the results of a new study on the effectiveness of calcium supplements. Sixty-two subjects participated in the study, and these subjects were randomly assigned to one of two groups. One group received a new type of calcium supplement while the other group received a placebo which looked identical to the calcium supplement. The doctors administering the study provided the medicines to the subjects, but they themselves did not know if the subjects were receiving the calcium or the placebo. Preliminary results indicate that there is improvement in bone density with

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