<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. for ethical reasons we cannot publish the data sets on line, however requests for the data underlying the findings presented in our manuscript can be made to the following persons: dr. joshua a. mott, influenza program director at cdc kenya, email: zud9@cdc.gov; and dr. frank odhiambo, head of health demographic surveillance system (hdss), email: fodhiambo@kemricdc.org.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>