<|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: due to restrictions under the human research ethics committee, all data relevant to the findings of this study are available upon request and requests may be sent to esther yuet ying lau at eyylau@hku.hk.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>