<|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 be made public due the nature of ethical approvals for the study from the ethics committee of the nagasaki university graduate school of biomedical sciences. the data is however available upon request by contacting corresponding author (takamura@nagasaki-u.ac.jp).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>