Shevlin, Mark, Butter, Sarah, McBride, Orla, Murphy, Jamie, Gibson-Miller, Jilly, Hartman, Todd K., Levita, Liat, Mason, Liam, Martinez, Anton P., McKay, Ryan, Stocks, Thomas VA, Bennett, Kate M, Hyland, Philip, Vallieres, Frédérique, Valiente, Carmen, Vazquez, Carmelo, Contreras, Alba, Peinado, Vanesa, Trucharte, Almudena, Bertamini, Marco, Panzeri, Anna, Bruno, Giovanni, Granziol, Umberto, Mignemi, Giuseppe, Spoto, Andrea, Vidotto, Giulio and Bentall, Richard P. (2022) 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. BMC Psychiatry, 22 (1). pp. 1-9. ISSN 1471-244X