Is there a U-shaped relationship between physical activity in leisure time and risk of chronic low back pain? A follow-up in the HUNT Study
Crossref DOI link: https://doi.org/10.1186/s12889-016-2970-8
Published Online: 2016-04-11
Published Print: 2016-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Heuch, Ingrid
Heuch, Ivar
Hagen, Knut
Zwart, John-Anker