1. Department of Human Genetics David Geffen School of Medicine, University of California Los Angeles California USA
2. Department of Neurology David Geffen School of Medicine, University of California Los Angeles California USA
3. Department of Epidemiology Fielding School of Public Health, University of California Los Angeles California USA
4. Parkinson's Disease Research, Education, and Clinical Center Greater Los Angeles Veterans Affairs Medical Center Los Angeles California USA
5. Brain Research Institute University of California Los Angeles California USA
6. Lübeck Interdisciplinary Platform for Genome Analytics University of Lübeck Lübeck Germany
7. Department of Psychology, Centre for Lifespan Changes in Brain and Cognition University of Oslo Oslo Norway
8. Danish Cancer Society Research Center Danish Cancer Society Copenhagen Denmark
9. Department of Biostatistics, Fielding School of Public Health University of California Los Angeles California USA
10. Department of Computational Medicine David Geffen School of Medicine, University of California Los Angeles California USA
11. Translational Epidemiology Group, Lübeck Interdisciplinary Platform for Genome Analytics University of Lübeck Lübeck Germany
12. Ageing Epidemiology Research Unit, School of Public Health Imperial College London United Kingdom
13. Department of Environmental Health Fielding School of Public Health, University of California Los Angeles California USA