Environmental Research Foundation . . P.O. Box 5036, Annapolis, MD 21403 . .
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To subscribe, E-mail the words . . Researchers in Toronto, Canada examined a medical controversy to see which scientists held what sorts of views. The controversy they studied was the use of calcium-channel blockers, which are used to treat high blood pressure and heart disease. Other channel-blockers fell under suspicion of being dangerous. The 70 articles had a total of 86 authors, and 71 of those returned the surveys.