<|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: under swedish law, the authors cannot share the data underlying this study and cannot do any further research than what is specified in the ethical permissions application. for access to the data, researchers should first contact the owner of the database, the university of linköping. please contact the corresponding author dr. urban alehagen (urban.alehagen@liu.se) with requests and for assistance with data requests. if the university approves the request for data access, researchers may submit an application to the regional ethical review board detailing the specific research question that the researcher wants to examine.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>