Validity of the Functioning Assessment Short Tests (FAST), in patients with schizophrenia Eva María Luján-Lujan; María Ángeles García-León; Elena Rodriguez-Cano; Sergi Huertas-Martínez; Juan Roldan-Merino; Montserrat Puig-Llobet; Maria Dolores Miguel-Ruiz; Raimon Salvador; Eduard Vieta; Edith Pomarol-Clotet;