Utility of the twelve-item World Health Organization disability assessment schedule II (WHO-DAS II) for discriminating depression "caseness" and severity in Spanish primary care patients

1. Luciano, J.V.
2. Ayuso-Mateos, J.L.
3. Fernandez, A.
4. Aguado, J.
5. Serrano-Blanco, A.
6. Roca, M.
7. Haro, J.M.