1. Hospital Santa Creu i Sant Pau (S.M.W.), Autonomous University of Barcelona and Centro de Investigación Biomédica en Red Unit 747, Barcelona, Spain
2. Charité-Universitätsmedizin (C.J.S.), Campus Mitte, D-10117 Berlin, Germany
3. Lilly Research Laboratories (D.M., M.L.H.), Eli Lilly and Company, Indianapolis, Indiana 46285
4. Cedars-Sinai Medical Center (S.M.), Los Angeles, California 90048
5. Lilly Research GmbH (H.J., W.F.B.), Eli Lilly and Company, D-61350 Bad Homburg, Germany
6. Cascina del Rosone (A.F.A.), 14041 Agliano Terme, Italy