The Murcia Twin Registry: A population-based registry of adult multiples in Spain

1. Ordoñana, J.R.
2. Rebollo-Mesa, I.
3. Carrillo, E.
4. Colodro-Conde, L.
5. García-Palomo, F.J.
6. González-Javier, F.
7. Sánchez-Romera, J.F.
8. Aznar Oviedo, J.M.
9. De Pancorbo, M.M.
10. Pérez-Riquelme, F.