<|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: due to ethical restrictions, data are available upon request for researchers who meet the criteria for access to confidential data from the institutional review board (irb) of the coal center hospital in shanxi. the study was conducted in accordance with the principles of the declaration of the hospital.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>