<|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 data used in this paper were provided by the the national population and family planning commission in china, which is the top agency governing health issues in china. we have to sign a legally binding agreement with the commission that we will not share any original data to any third parties. it is third party data and the authors did not produce any of the original data. although interested researchers can apply for the access to the data at http://www.moh.gov.cn/ldrks/s7846r/201410/ee63c32ca4b7443faf2feeb14ce88874.shtml and e-mail:ldrkzxsj@163.com, the final decision is up to the national population and family planning commission.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>