<|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. individual level data used for model validation is available from national health and nutrition examination survey public files (http://www.cdc.gov/nchs/nhanes.htm). other validation data are available in the text of the referenced publications.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>