<|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. although the patient-level data do not include participant names, this decision is in the interest of ensuring participant confidentiality. data can be made available on request by contacting the lead author, dr. holly williams (hbw2@cdc.gov).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>