<|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. our data are available upon request because of the ethical restriction, which are related to the privacy of the patients. the readers could contact to the corresponding author junwei yang to get the details of the data.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>