Corrections and Clarifications

Corrections and Clarifications

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Science  19 Apr 1996:
Vol. 272, Issue 5260, pp. 339
DOI: 10.1126/science.272.5260.339f


The mean time of treatment and follow-up in the Beta Carotene and Retinol Efficacy Trial (CARET) sponsored by the National Cancer Institute (NCI) was 4 years, not 8 years, as might be concluded from the News & Comment article “‘Natural’ cancer prevention trial halted” by Kim Peterson (26 Jan., p. 441). In the same article, the Physician's Health Study was described as NCI “contract research,” when, in fact, it was funded by an investigator-initiated grant.

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