[1] Univ Southern Denmark, Natl Inst Publ Hlth, Copenhagen, Denmark
[2] Aarhus Univ, Ctr Alcohol & Drug Res, Aarhus, Denmark
[3] Univ Southern Denmark, Dept Publ Hlth, Unit Hlth Promot Res, Odense, Denmark
[4] Charite Univ Med Berlin, Inst Biometry & Clin Epidemiol, Berlin, Germany
[5] Publ Hlth Inst, Alcohol Res Grp, Emeryville, CA USA
[6] Univ Southern Denmark, Natl Inst Publ Hlth, Studiestraede 6, DK-1455 Copenhagen K, Denmark