<|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 are available from the korean national health insurance service (nhis), but access to confidential data are limited to researchers who meet the necessary criteria; basically, any researchers who propose a study subject and plans with a standardized proposal form and are approved by the nhis review committee on research support can access the raw data. details of this process and a provision guide are now available at http://nhiss.nhis.or.kr/bd/ab/bdaba000eng.do.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>