|
Resolution: standard / high Figure 2.
The proportions of Danish twin individuals aged 20 to 71 who reported to have had
low back pain ever and those who reported to have had low back pain in the past year
by age and gender (N = 34,674).
Leboeuf-Yde et al. BMC Musculoskeletal Disorders 2009 10:39 doi:10.1186/1471-2474-10-39 |
