[1] Med Univ, Alexandru Obregia Clin Psychiat Hosp, Bucharest, Romania
[2] UCL, London, England
[3] Suny Downstate Med Ctr, Brooklyn, NY 11203 USA
[4] Stefan S Nicolau Inst Virol, Bucharest, Romania
[5] Univ Bonn, Sch Med, Inst Human Genet, Bonn, Germany
[6] Univ Hosp Bonn, Bonn, Germany
[7] Univ Basel, Basel, Switzerland
[8] Univ Bonn, Univ Hosp Bonn, Sch Med, Inst Human Genet, Bonn, Germany