1 Department of Psychiatry, University of North Carolina at Chapel Hill, Campus Box #7160, Chapel Hill, NC 27599, USA; Division of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, UK. Electronic address: arianna_diflorio@med.unc.edu.
2 National Center for Register-based Research, Aarhus University, Aarhus, Denmark.
3 National Center for Register-based Research, Aarhus University, Aarhus, Denmark; Department of Psychiatry, Erasmus Medical Centre, Rotterdam, Netherlands.