<|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 underlying this study are subject to ethical restriction and owned by the cdc. all data are available upon request, and data requests should be directed to the centers for disease control and prevention, nchhstp, dhap, epidemiology branch, at 1600 clifton rd, ms e-45, atlanta, ga, 30333. please note that release of these data must be in accordance with the provisions of the public health service act (42 u.s.c. 242m(d)), requiring that the privacy of individuals who provide personal information be protected. in addition, the cdc/atsdr policy on releasing and sharing data specifies that, in order to meet privacy requirements, cdc must ensure that confidential information is not disclosed.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>