<|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, for approved reasons, some access restrictions apply to the data underlying the findings. the data are available on request from the danish data archive (http://samfund.dda.dk/ddakatalog/ and http://www.sa.dk/content/us/about_us/danish_data_archive) for researchers who meet the criteria for access to confidential data. this restriction is due to ethical compliance. the data could rather easily be de-anonymised due to the small number of extremely preterm infants in denmark, and violate the privacy and confidentiality of personal information of research subjects. the data are categorised as personal sensitive data and covered by the act of processing of personal data in denmark.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>