<|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 all data underlying the findings are fully available without restriction. the data used are publicly available from the 2010 korea national health and nutrition examination survey (knhanes), and are held by the korean centers for disease control and prevention (http://knhanes.cdc.go.kr). requests for data may be sent to yumi cho (choym527@korea.kr).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>