<|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: due to restrictions set by the ethics committee of the university of occupational and environmental health regarding patient confidentiality, data cannot be made publicly available. data are available upon request and requests may be sent to the corresponding author (sapient@med.uoeh-u.ac.jp).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>