Bone mass and vitamin D in patients with systemic sclerosis from two Spanish regions

1. Rios-Fernández, R.
2. Callejas-Rubio, J.-L.
3. Fernández-Roldán, C.
4. Simeón-Aznar, C.-P.
5. García-Hernández, F.
6. Castillo-Palma, M.-J.
7. Fonollosa Pla, V.
8. Marín, A.B.
9. González-Gay, M.Á.
10. Ortego-Centeno, N.