Yeah, but that stops with 2012 data, and for "last-year-exposure" the data is actually pretty thin for university students and adolescents: https://i.imgur.com/

Yeah, but that stops with 2012 data, and for "last-year-exposure" the data is actually pretty thin for university students and adolescents: https://i.imgur.com/1Xly88x.png https://i.imgur.com/1Xly88x.png (Supplement, eFigure)