The second study was a Norwegian study of high-risk men.

A major Norwegian study was launched in 1972.

This was challenged by a Norwegian study released in 2005, which suggested that lobsters cannot feel pain due to their diminished nervous capacity.

But a Norwegian study shows that genetics may also play a role.

The increased proportion of medium-aged stands of trees created by modern forestry techniques have benefited the species, according to a Norwegian study.

These rates were five times higher than those estimated by an earlier Norwegian study - the only other known research describing EM incidence.

The women in the Norwegian study exercised vigorously enough to raise their heart rates and break into a sweat.

In a 2009 Norwegian study results were somewhat inconclusive at seven years.

A Norwegian study of 2001 found no association with paternal age after adjustment for maternal age.