<|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 data underlying this study (the responses to the korea youth risk behavior web-based survey (kyrbws)) belong to the korea centers for disease control and prevention. interested researchers who meet the criteria for access can contact the korea cdc to request the raw data: homepage: http://yhs.cdc.go.kr/, phone: 82-43-719-7505, fax: 82-43-719-7527.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>