Lichtenstein P, de Faire U, Floderus B, Svartengren M, Svedberg P, Pedersen NL
(Karolinska Institutet; Karolinska Hospital; Institute of Environmental Medicine, Karolinska …

Since the Swedish Twin Registry was first established in the late 1950s to study the
importance of smoking and alcohol consumption on cancer and cardiovascular diseases, it …

Background Population based twin registers represent a valuable tool for genetic
epidemiological research, since twin studies aim at separating the effect of genes and …

Introduction: The Danish Twin Registry is a unique source for studies of genetic, familial and
environmental factors on life events, health conditions and diseases. Content: More than …

The Danish Twin Registry is the oldest national twin register in the world, initiated in 1954,
and, by the end of 2005, contained more than 75,000 twin pairs born in the between 1870 …

The Danish Twin Registry is the oldest national twin register in the world, initiated in 1954 by
ascertainment of twins born from 1870 to 1910. During a number of studies birth cohorts …

The classic twin study is sometimes described as “the perfect natural experiment” for the
investigation of the aetiology of complex disease, but assumptions of the twin design need to …

In studies on the Finnish Twin Cohorts, genetic and environmental determinants of common,
complex diseases, and their behavioral risk factors have been investigated in Finland. In …

The Norwegian Institute of Public Health in Oslo has an ongoing program of twin research
using population-based cohorts of twins. The current database includes information on twins …

HE relative roles of genetic constitution and environmental exposure in the causation of
cancer have been debated for decades. 1 Geographic differences, trends over time in the …