<|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: data are available from the university of helsinki, department of public health institutional data access / ethics committee for researchers who meet the criteria for access to confidential data. the authors confirm that the data used in the analysis will be available upon request to all interested researchers. please contact prof. markku koskenvuo, markku.koskenvuo@helsinki.fi for requests.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>