... European research, statistical analysis, drafting and presentation NB was essential in the development of the idea, description and thinking of the study, as well as drafting of the article All authors ... with the closest relationship between alcohol use and mental health problems among the youngest adolescents [27] Few European and especially Scandinavian population data are describing adolescents' ... 1 3–1 9 years [33] Mental health The mental health variables were derived from the mental health "Symptom Check List" and the school adjustmentpart of the questionnaire Anxiety and depression Symptoms...