<|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 nationwide emergency department sample used for this analysis is held by a third party. all purchasers and users of healthcare cost and utilization project (hcup) data must complete the hcup data use agreement (dua) training course and sign an hcup dua before receipt of the data. http://www.hcup-us.ahrq.gov/tech_assist/dua.jsp. the hcup databases and supplemental files are publicly available for purchase online. https://distributor.hcup-us.ahrq.gov/databases.aspx<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>