1. Department of PsychiatryUniversity of BonnBonnGermany
2. German Center for Neurodegenerative Diseases (DZNE)BonnGermany
3. Institute for BiometricsHannover Medical SchoolHannoverGermany
4. Department of PsychiatryTechnical University at MunichMunichGermany
5. Department of Primary Medical CareUniversity Medical CenterHamburgGermany
6. Institute of General Practice, Medical FacultyUniversity of DüsseldorfDüsseldorfGermany
7. Institute of Social Medicine and Occupational HealthUniversity of LeipzigLeipzigGermany
8. Central Institute for Mental HealthMannheimGermany