RT Journal Article T1 Measurement invariance of the Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder scale (GAD-7) across four European countries during the COVID-19 pandemic A1 Shevlin, Mark A1 Peinado Tena, Vanesa A1 Trucharte Martínez, Almudena A1 Valiente Ots, M. Carmen A1 Vázquez Valverde, Carmelo José A1 Bentall, Richard P. PB BMC SN 1471-244X YR 2022 FD 2022-03-01 LK https://hdl.handle.net/20.500.14352/98508 UL https://hdl.handle.net/20.500.14352/98508 LA eng DS Docta Complutense RD 21 ene 2026