1. Department of Twin Research & Genetic Epidemiology; King's College London; London UK
2. Farr Institute of Health Informatics Research; Institute of Health Informatics; University College London; London UK
3. State Key Lab of Pharmaceutical Biotechnology; Hong Kong China
4. Department of Pharmacology and Pharmacy; University of Hong Kong; Pokfulam Hong Kong China
5. Centre for Genomic Sciences; University of Hong Kong; Pokfulam Hong Kong China
6. Department of Medicine; University of Hong Kong; Pokfulam Hong Kong China
7. Department of Human Genetics; McGill University; Montreal Canada
8. Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital; McGill University; Montreal Canada
9. Department of Epidemiology; Biostatistics, and Occupational Health; McGill University; Montreal Canada
10. Metabolon, Inc.; Durham NC USA
11. Department of Medicine; McGill University; Montreal Canada