[1] UNIV JENA,PSYCHIAT & NEUROL HANS BERGER CLIN,DEPT NEUROL,O-6900 JENA,GERMANY
[2] UNIV GREIFSWALD,NEUROL & PSYCHIAT CLIN,O-2200 GREIFSWALD,GERMANY
[3] ST HEDWIGS HOSP,DEPT INTERNAL MED,BERLIN,GERMANY
[4] UNIV ROSTOCK,EBG,PSYCHIAT & NEUROL CLIN,O-2500 ROSTOCK,GERMANY
[5] KARL MARX UNIV,PAEDIAT CLIN,O-7010 LEIPZIG,GERMANY
[6] KARL MARX UNIV,PAUL FLECHSIG INST BRAIN RES,DEPT NEUROCHEM,O-7010 LEIPZIG,GERMANY
[7] MED ACAD CARL GUSTAV CARUS,PSYCHIAT & NEUROL CLIN,O-8019 DRESDEN,GERMANY