<|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 the findings cannot be made freely available because of ethical and legal restrictions (french laws on data protection). indeed, the present analysis involves a large number of variables that, combined, could be used to re-identify the participating women or children based on a few key characteristics, and then to have access to other personal data. therefore, the french ethical authority (commission nationale de linformatique et des libertés) strictly forbids making such data freely available. however, all relevant data can be obtained upon request from the epipage steering committee. readers may contact professor pierre-yves ancel (pierre-yves.ancel@inserm.fr) to request the data.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>