<|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 only available upon request as they were obtained from a third party, i.e. the district of columbia (dc) department of health hiv/aids hepatitis, std, tb administration (hahsta) hiv testing grantee agencies and cannot be shared as per our irb approval through the george washington university and the dc department of health institutional review boards. readers who are interested in requesting the data may contact mr. michael kharfen, senior deputy director of hahsta at the dc department of health at michael.kharfen@dc.gov to arrange access.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>