<|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: data are from the swedish medical birth register, which is available upon request from the swedish national board of health and welfare, a central government agency, following presentation of an appropriate ethical permit. for information in english please see: http://www.socialstyrelsen.se/register/halsodataregister/medicinskafodelseregistret/inenglish. researchers can contact sara segelson (sara.segelson@socialstyrelsen.se) for more information.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>