Does sedentary behavior increase the risk of low back pain? A population-based co-twin study of Spanish twins

1. Amorim, A.B.
2. Levy, G.M.
3. Pérez-Riquelme, F.
4. Simic, M.
5. Pappas, E.
6. Dario, A.B.
7. Ferreira, M.L.
8. Carrillo, E.
9. Luque-Suarez, A.
10. Ordoñana, J.R.
11. Ferreira, P.H.