1. Department of Mental Health, Bloomberg School of Public Health Johns Hopkins University Baltimore MD USA
2. Department of Neuropsychology, Kennedy Krieger Institute Johns Hopkins University Baltimore MD USA
3. Department of Epidemiology, Mailman School of Public Health Columbia University New York NY USA
4. School of Nursing Columbia University New York NY USA
5. Joint Program in Survey Methodology University of Maryland MD USA
6. Department of Statistics Ludwig Maximilian University of Munich Munich Germany
7. Statistical Methods Group Institute for Employment Research Nuremberg Germany
8. Centre for Alcohol Policy Research La Trobe University Bundoora VIC Australia