<|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: our data are available upon request because we used data from the national health insurance corporation. this database consists of medical data including personal and financial information. our data are available upon institutional committee approval. please contact to request the data byung-ho nam (byunghonam@ncc.re.kr).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>