Dolph Hatfield is Scientist Emeritus in the Molecular Biology of Selenium Section at the National Cancer Institute.Ulrich Schweizer, is Professor at the Institute of Biochemistry and Molecular Biology, Rheinische Friedrich-Wilhelms-Universität Bonn.Petra Tsuji is Assistant Professor in the at the Department of Biological Sciences at Towson University.Vadim N. Gladyshev, is Professor in the Division of Genetics, Department of Medicine at the Brigham and Women's Hospital and Harvard Medical School.