<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: our study includes data from health registers in sweden, denmark and finland, and such data cannot be shared due to confidentiality issues. data are available from the national board of health and welfare in sweden (registerservice@socialstyrelsen.se), research services at statens serum institut in denmark (http://www.ssi.dk/english/healthdataandict/health%20data/research%20services.aspx), and tlh national institute for health and welfare in finland (https://www.thl.fi/en/web/thlfi-en/statistics/information-for-researchers) for researchers who meet the criteria for access to confidential data.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>