Follow up questionnaire in NL

Currently the follow up questionnaire is conducted in a part of the Dutch cohort. Last year the follow up questionnaire was already conducted 1/3 of the cohort in the Netherlands. Sweden and Finland already finished the follow up questionnaire.

This data will enable us to compare whether the health and habits of participants have changed over a 4-5 year period.The follow-up questionnaire focuses on mobile phones and other wireless technologies, but also collects data on other environmental exposures, ensuring that the COSMOS study is a valuable resource for the study of wider environment and health questions.