1. Shire, A Member of the Takeda Group of Companies, Lexington, MA, USA
2. Optum Epidemiology, Boston, MA, USA
3. Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, NC, USA
4. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
5. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden