<|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: the authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. as the authors used the hospital registry-based data including personal identifiers, the irb has restricted this data in the interest of ensuring patient confidentiality. but, data are available from the lead author (hey) for researchers who obtain approval (http://cmccrcc.catholic.ac.kr/english/main.jsp).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>