<|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: data are available upon request due to ethical restrictions from the university medical centre rotterdam department of public health. requests to access the data can be sent to dr. h. raat md, erasmus mc, university medical centre rotterdam department of public health, po box 2040, 3000 ca rotterdam, the netherlands, email: raat@erasmusmc.nl; phone: +31 10 4087714, fax: +31 10 7038580.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>