<|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 available from the Xiangya School of Nursing, Central South University Ethics Committee for researchers who meet the criteria for access to confidential data. Data requests may be sent to Professor Min Yang, the director of Xiangya School of Nursing of Central South University Ethics Committee (yangminzhu@csu.edu.cn).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>