Further to Kris Rogers' post on 11 October, for a detailed
          look at selenium, some light might be shed by referring to
          "Selenium.  Environmental Health Criteria No. 58, World
          Health Organization, International Programme on Chemical
          Safety, 1987, 306 pages". For information, contact my
          colleague Dr John Herrman, IPCS, e-mail: <[log in to unmask]>.

          Jim Akre, Nutrition, WHO, Geneva