<|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 come from specific clinics. patients of these clinics need to be protected as a group, as study questions include sensitive topics. the authors guaranteed that the data will be kept confidential and used only by researchers for research purposes. the consent form was part of the application that was approved by the survey and behavioral research ethics committee, the chinese university of hong kong. data are available upon request to researchers who meet the criteria for access to confidential information. requests may be sent to the survey and behavioral research ethics committee, the chinese university of hong kong (ms. mugi lau, mugilau@cuhk.edu.hk).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>