1. From the University of Copenhagen (H.S.), Denmark; Denis Diderot University (P.A.), Paris, France; University of Heidelberg (M.G.H.), Mannheim, Germany; Vanderbilt University (A.C.), Nashville, Tenn; Duke University (L.B.G.), Durham, NC; University of San Diego (J.Z.), California; Pfizer Inc (M.M.), New York; and Franklin University (K.M.W.), Chicago, Mich.