<|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 from the pr077/10 study whose authors may be contacted at fcontreras@bellvitgehospital.cat. fernando contreras. bellvitge university hospital-idibell, the clinical research ethics committee of bellvitge (ceic). data from the study is available upon request because of confidentiality restrictions. interested readers can access data contacting with the clinical research ethics committee of bellvitge (ceic) at presidenciaceic@bellvitgehospital.cat.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>