National health care registries in the Nordic countries share many attributes, but different
legal and ethical frameworks represent a challenge to promoting effective joint research …

In Norway, the Directorate of Health is responsible for two nationwide registries–the
Norwegian Patient Registry (NPR) and the Norwegian Registry for Primary Health Care …

We present the largest exome sequencing study of autism spectrum disorder (ASD) to date
(n= 35,584 total samples, 11,986 with ASD). Using an enhanced analytical framework to …

Twin studies provide a method for estimating the heritability of phenotypes and for
examining genetic and environmental relationships between phenotypes. We conducted a …

This is an update of the Norwegian Mother and Child Cohort Study (MoBa) cohort profile
which was published in 2006. Pregnant women attending a routine ultrasound examination …

We conducted a search for rare, functional variants altering susceptibility to Alzheimer's
disease that exploited knowledge of common variants associated with the same disease …

Objective: The authors sought to clarify the structure of the genetic and environmental risk
factors for 22 DSM-IV disorders: 12 common axis I disorders and all 10 axis II disorders …

OBJECTIVES: To estimate the association between maternal use of acetaminophen during
pregnancy and of paternal use before pregnancy with attention-deficit/hyperactivity disorder …

Background Mental disorders often have onset early in life, contribute substantially to the
global disease burden, and may interfere with young people's ability to complete age …

Purpose To compare the prevalence and pattern of comorbid substance use disorders
(SUD) between patients with schizophrenia, bipolar disorder, and depressive illness …