<|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 department of breast surgery, key laboratory of breast cancer, fudan university shanghai cancer center, shanghai medical college, fudan university, for researchers who meet the criteria for access to confidential data. interested researchers should contact: chuan-gui song, phone: 86-13365910993, e-mail: songchuangui@yahoo.com.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>