[1] Univ Copenhagen Hosp, Inst Prevent Med, Danish Epidemiol Sci Ctr, DK-1399 Copenhagen K, Denmark
[2] Indiana Univ, Kinsey Inst Res Sex Gender & Reprod, Bloomington, IN USA
[3] Univ Copenhagen, Inst Publ Hlth, Dept Hlth Psychol, Copenhagen, Denmark
[4] Danish Psychol Publishers, Copenhagen, Denmark