1. Radboud University Medical Center (J.W.M.L.), 6500 HB Nijmegen, The Netherlands;
2. VA Medical Center and University of California, San Francisco (Q.-Y.D.), San Francisco, California 94121;
3. University Hospital Dresden (G.E.), 01307 Dresden, Germany;
4. Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Service de Génétique, (A.-P.G.-R.), F-75015 Paris, France;
5. Université Paris Descartes (A.-P.G.-R.), F-75006 Paris, France;
6. Mayo Clinic (S.K.G.G., M.H.M.), Rochester, Minnesota 55905;
7. National Hospital Organisation Kyoto Medical Center (M.N.), Kyoto 612-8555; Japan;
8. Eunice Kennedy Shriver National Institute of Child Health & Human Development (K.P.), Bethesda, Maryland 20892;
9. Mayo Clinic (W.F.Y.), Rochester, Minnesota 55905