<|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 cathgen steering committee for researchers and research projects that meet the criteria for access to confidential patient level data. requests for the data may be sent to dr. william e. kraus (william.kraus@duke.edu). the cathgen gwas data are available through dbgap (accession numbers: phs000704.v1.p1 and phs000705.v1.p1).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>