<|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. data are unsuitable for public deposition due to privacy reasons of human subjects. to request the data, readers may contact the polyp prevention study group (ppsg) consortium steering committee by emailing john a. baron, principal investigator for the ppsg, at john.a.baron@dartmouth.edu.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>