<|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 available from the danish twin registry at sdu's institutional data access committee for researchers who meet the criteria for access to confidential data. the restriction is imposed by the danish twin registry and sdu in order to comply with the danish data protection law, http://www.sdu.dk/en/om_sdu/institutter_centre/ist_sundhedstjenesteforsk/centre/dtr/researcher.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>