In times of economic recession, did Portuguese adolescents stay healthy so far, but no longer happy?

1. de Matos, M.G.
2. Reis, M.
3. Camacho, I.
4. Simões, C.
5. Gomez-Baya, D.
6. Mota, C.
7. Tomé, G.
8. Gaspar, T.
9. do Céu Machado, M.