Seasonal variation in cardiovascular disease risk factors in a subarctic population: the Tromsø Study 1979–2008
Laila Arnesdatter Hopstock, Adrian Gerard Barnett, Kaare Harald Bønaa, Jan Mannsverk, Inger Njølstad, Tom Wilsgaard
J Epidemiol Community Health Feb 2013, 67 (2) 113-118; DOI: 10.1136/jech-2012-201547