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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, our ethical committee does not allow open/public sharing of individual data. aggregated data are available to other researchers, upon request. requests may be sent to the corresponding author. the principal investigators of the italian epic centres participating to this study agree the following: dr. vittorio krogh will be the person to whom interested researchers may present a formal request that will be forwarded to the ethical committee of each centre. requests should be sent to dr. vittorio krogh (vittorio.krogh@istitutotumori.mi.it)<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>