This Week's Letters

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Science  21 Mar 1997:
Vol. 275, Issue 5307, pp. 1721-1725
DOI: 10.1126/science.275.5307.1721

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Last week's discussion continues about whether regular mammograms (right) should be recommended to women in their forties. Two writers advocate the Chilean “Presidential Chairs in Science” program. A “rare bilateral gynandromorph” butterfly is called by its right name. And a growing proportion of elderly persons in a population does not necessarily mean that social services will be “crushed”—in Russia or in the United States.