<|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 from zhenping are open to the public and the data from ningshan are available upon request. we have received permission from the irb of xian jiaotong university health science center to release the anonymous individual medical records. zhenping county hospital has approved of public access to the data. to ensure compliance with local regulations at ningshan, the data from this county can only be accessed in ningshan with the approval and supervision of ningshan county hospital. for researchers interested in acquiring the raw data, the data of zhenping can be downloaded from the harvard dataverse network (doi: 28588) and the data from ningshan can be obtained by contacting ningshan county hospital (contact name: jiuhao chen, email: nsxyy@163.com).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>