[1] Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden
[2] Harvard TH Chan Sch Publ Hlth, Dept Epidemiol, Boston, MA USA
[3] Univ N Carolina, Dept Psychiat, Chapel Hill, NC 27515 USA
[4] Univ N Carolina, Dept Nutr, Chapel Hill, NC 27515 USA