Population based study of risk factors for underdiagnosis of asthma in adolescence: Odense schoolchild study

Objective: To describe factors related to underdiagnosis of asthma in adolescence.

Use of calcium channel blockers and risk of suicide: ecological findings confirmed in population based cohort study

Objective: To investigate possible associations between use of cardiovascular drugs and suicide.

Why do children have chronic abdominal pain, and what happens to them when they grow up? Population based cohort study

Objective: To test the hypotheses that children with abdominal pain have anxious parents and come from families with high rates of physical illness and that they grow up to suffer from high rates of medically unexplained symptoms and psychiatric disorders.