6Lowe B. Validation and standardization of the GAD-7 in the general popu- lation[J]. Med Care,2008 ;46 (3) :266-74.
7Soares-Filho GL, Freire RC, Biancha K, et al. Use of the hospital anxiety and depress!on scale (HADS) in a cardiac emergency room-chest pain u- nit[J]. Clinics,2009 ;64(3) :209-14.
8Soares — Filho GLF. Use of the Hospital Anxiety and Depression Scale(HADS) in a Cardiac Emergency Room - Chest Pain Unit [ J] . Clin-ics, 2009,64 (3) : 209-214.
9Lowe B. validation and standardization of the GAD - 7 in the gen - eralpopulation[J]. Med Care, 2008, 46 (3): 266 -274.