<|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 korean national health & nutrition examination survey (knhanes) 2008 data is publicly available at https://knhanes.cdc.go.kr/knhanes/eng/index.do. the data was obtained by the principal investigator (el) from the korean centers for disease control & prevention. our study using the data which does not contain patient identifiers or linkable information was approved by the institutional review board of seoul national university in korea and howard university in the united states.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>