<|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. the data underlying the findings in our study cannot made public due the nature of ethical approvals for the study. the data is however available upon request by contacting corresponding author (takamura@nagasaki-u.ac.jp). a de-identified dataset will be provided to any researcher upon requests.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>