<|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 restrictions prohibit the authors from making the minimal data set publicly available. the data will be available upon request from xin gao at zhongshan_endo@126.com. our study was supported from several national and local government research funds. according to the relevant policy of data management, we were forbidden by data management committee of shanghai changfeng study (the agency who provided the underlying data) to provide our data to third parties.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>