<|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 of this manuscript is derived from two main studies. the national health and nutrition examination survey data is publically available at http://www.cdc.gov/nchs/nhanes.htm. data from the european youth heart study are available upon request from the eyhs steering committee due to ethical restrictions agreed by the eyhs consortium. interested parties to access to the dataset, at the time of application, will be required to describe how the data will be used, securely managed, and permanently deleted. for this purpose, interested parties may contact dr. luis b. sardinha (lsardinha@fmh.ulisboa.pt).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>