<|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: gwas data for 14,419 study participants is available via dbgap (accession number: phs000306.v4.p1). this data constitutes a portion of that underlying the findings of this paper. due to ethical restrictions related to patient confidentiality, the remaining data is available upon request by contacting dr. christopher haiman (christopher.haiman@med.usc.edu).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>