Mental health problems, negative life events, perceived pressure and the frequency of acute infections among adolescents Results from a crossâsectional, multicultural, populationâbased study
Mental health problems, negative life events, perceived pressure and the frequency of acute infections among adolescents. Results from a cross-sectional, multicultural, population-based study
Perceived pubertal timing, pubertal status and the prevalence of alcohol drinking and cigarette smoking in early and late adolescence: a population based study of 8950 Norwegian boys and girls