The Four-Dimensional Symptom Questionnaire (4DSQ): a validation study of a multidimensional self-report questionnaire to assess distress, depression, anxiety and somatization
Autorzy
Berend Terluin, Harm WJ van Marwijk, Herman J Adèr, Henrica CW de Vet, Brenda WJH Penninx, Marleen LM Hermens