<|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: the authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. human thyroid tissues were obtained following the approval of the institutional review board (irb) of severance hospital (seoul, korea). informed written consent was obtained from all patients and the study was performed in accordance with the ethical guidelines of the helsinki declaration.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>