1. Michaelidion Cardiac Center (A.B., K.K.N., C.K., L.K.M.), Ioannina, 45 110 Greece
2. Departments of Obstetrics and Gynecology (S.N.K.), Ioannina, 45 110 Greece
3. Cardiology (K.K.N., C.K., L.K.M.), Ioannina, 45 110 Greece
4. Genetics Unit, Department of Obstetrics and Gynecology (A.C., I.G.), University of Ioannina, Ioannina, 45 110 Greece
5. Pharmacy Department Clinical Research Center (K.A.C.), National Institutes of Health, Bethesda, Maryland 20892
6. Department of Obstetrics and Gynecology (A.M.), University of Crete, Crete, 71 409 Greece
7. Department of Obstetrics and Gynecology, University Hospital of Ioannina (O.P., A.K.), Ioannina, 45 110 Greece
8. First Department of Pediatrics (G.P.C.), University of Athens, Athens, 157 84 Greece