1. Merck Research Laboratories (G.A.H., A.B., C.S., P.K., B.Y., P.Z., K.S., D.H., M.T., A.Q.W., W.Z., M.J.D., W.T., K.M.G., J.A.W.), Rahway, New Jersey 07065
2. 3ClinicalResearch AG (B.D., G.G.), 16761 Berlin, Germany
3. Focus Clinical Drug Development GmBH (A.S.), 41460 Neuss, Germany
4. Free University of Brussels (B.K.), Brussels, 1050 Belgium
5. Clinical Pharmacology Associates (K.C.L.), Miami, Florida 33142
6. Diabetes and Glandular Disease Research Associates (M.S.K.), San Antonio, Texas 78229
7. MSD-Europe (C.C., M.D.S., I.d.L., K.V.D.), 1180 Brussels, Belgium
8. University of Copenhagen (J.J.H., C.F.D.), DK-2200 Copenhagen, Denmark