<|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: all data underlying the findings in this study are available upon request because of ethical and legal restrictions. restrictions are due to the use of computerized medical data from human tissues and the obligation to protect patient confidentiality. data are available from the research unit upres ea220 and the hospital foch data access. contact for where requests for the data can be sent to pr christophe faisy (last author).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>