Increased polar stratospheric ozone losses and delayed eventual recovery owing to increasing greenhouse-gas concentrations. Antarctic ozone hole expands in altitude. Tamoxifen therapy should last 5 years. Raloff, J. 1996. U.N. body rules tamoxifen a carcinogen.
Studies spark new tamoxifen controversy.
FDA, others offer new tamoxifen warnings. Tamoxifen's maker publishes cancer data. Tamoxifen trial begins amid new concerns. Seachrist, L. 1995. Tamoxifen use limited.