<|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: ethics committee approval for this study restricts the public sharing of data as some of these data contain patient identifiable information, and hence can only be made available to a third party upon request. please direct all data requests to corresponding author. email: sanjeewa_sa@yahoo.com; address: breast cancer research office, ground floor, hockin building, waikato hospital, hamilton 3240, new zealand.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>