JOSEPH J. STEPHANOS, PHD, is Associate Professor of Bioinorganic, Biophysical, and Inorganic Chemistry at Menofia University. His research examines metalloprotein chemistry, ligand-binding, and coordination chemistry of biologically active compounds.

ANTHONY W. ADDISON, PHD, is Professor of Inorganic Chemistry at Drexel University. His research focuses on bioinorganic chemistry; chemistry of dioxygen- and NO-binding metalloproteins; and the design, synthesis, and properties of novel chelating agents and macrocyclic and oligonuclear metal complexes. His numerous research articles and conference presentations have earned over 8,000 citations and a Hirsch Index of 37.