<|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 restricted from public sharing by the institutional review board of universitair medisch centrum, groningen. all relevant data are available upon request, and readers may contact the first author, çigdem öztürk (c.ozturk@umcg.nl) with requests for data access.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>