“…More common were studies such as the Swedish Conscript Study (SCS; Romelsjç, Allebeck, AndrØasson, & Leifman, 2012), which assessed data taken at a single point in time and followed people up through national registers such as mortality registers; other examples are from e. g., England (Hayes et al, 2011), Finland (Virtanen et al, 2011), Spain (Herrero, Domingo-Salvany, Brugal, & Torrens, 2011), Sweden (NyhlØn, Fridell, Hesse, & Krantz, 2011, Denmark (Arendt, Munk-Jorgensen, Sher, & Jensen, 2011), and Germany (Holtmann et al, 2011). Followup based on registry data with only a single assessment of substance use patterns at baseline, however, does not allow us to look at any changes in consumption pattern and development over time.…”