Ghrelin and gastric bypass (multiple letters)

1. Teixeira, F.V.
2. Frühbeck, G.
3. Diez-Caballero, A.
4. Gil, M.J.
5. Montera, I.
6. Gómez-Ambrosi, J.
7. Salvador, J.
8. Cienfuegos, J.A.