<|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: due to legal restrictions, data used for this study has not been made available in the paper or supplemental files and is held by public health england, national cancer registration service (east) office. the data, however, is available by formal application request to public health england, national cancer registration service (east) office, unit cmagog court, hinton way, shelford bottom, cambridge, cambs cb22 3ad united kingdom. requests can be addressed to dr dc greeenberg.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>