![](/img/cover-not-exists.png)
Low socio-economic status is associated with increased risk of frequent headache: a prospective study of 22 718 adults in Norway
K Hagen, L Vatten, LJ Stovner, J-A Zwart, S Krokstad, G BovimVolume:
22
Year:
2002
Language:
english
Pages:
8
DOI:
10.1046/j.1468-2982.2002.00413.x
File:
PDF, 86 KB
english, 2002