<|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: data are within the paper and available upon request due to the presence of identifying participant information. readers interested in obtaining an anonymized version of these data should contact na tian (snowwife@163.com or 18926281988@126.com).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>