Improving suicide surveillance systems through the use of the Patient Health Questionnaire-9.

1. Arias de la Torre, J.
2. Ronaldson, A.
3. Vilagut, G.
4. Serrano-Blanco, A.
5. Molina, A.J.
6. Martín, V.
7. Valderas, J.M.
8. Dutta, R.
9. Dregan, A.
10. Alonso, J.