Published on in Vol 7, No 7 (2018): July

1 Department of Statistics , Harvard University, Cambridge, MA, US
2 Department of Psychiatry and Addiction Center , University of Michigan, Ann Arbor, MI, US
3 School of Public Health , University of Michigan, Ann Arbor, MI, US
4 Department of Emergency Medicine , University of Michigan Medical School, Ann Arbor, MI, US
5 Injury Prevention Center , University of Michigan, Ann Arbor, MI, US
6 Institute for Social Research , University of Michigan, Ann Arbor, MI, US
7 School of Information , University of Michigan, Ann Arbor, MI, US