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Lütke Lanfer, Sarah Susanne; Pfeifer, Ruth; Lahmann, Claas; Wünsch, Alexander (2022). How to Measure the Mental Health of Teachers? Psychometric Properties of the GHQ-12 in a Large Sample of German Teachers. International journal of environmental research and public health, 19(15) MDPI 10.3390/ijerph19159708
