<|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 dept. of cardiothoracic and vascular surgery institutional data access for researchers who meet the criteria for access to confidential data. our data can not be freely available due to restrictions by swedish law. request for data access should be adressed to dr hans granfeldt, chief of the dept. of cardiothoracic and vascular surgery, link_ping heart center, university hospital, se-581 85 link_ping, sweden.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>