title: Erratum.
abstract: In the article "Panel says Depo-Provera not proved safe" (News and Comment, 23 Nov., p. 950), the dosages of Depo-Provera, a progestogen, and estrogens used in cancer therapy and as a contraceptive were incorrectly reported. In cancer therapy, the hormones are used in large doses. In contraceptives, the dosages are small.