Assessing non-specific symptoms in epidemiological studies: Development and validation of the Symptoms and Perceptions (SaP) questionnaire

Yzermans, JBaliatsas, Cvan Dulmen, Svan Kamp, I2025-03-252025-03-2520162635892910.1016/j.ijheh.2015.08.006https://rivm.openrepository.com/handle/10029/649263Assessing non-specific symptoms in epidemiological studies: Development and validation of the Symptoms and Perceptions (SaP) questionnaireArticleInt J Hyg Environ Health 2016; 219(1):53-652025-03-25