<|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: for ethical reasons which include adverse impact to hiv-infected united states air force personnel still in service, data will not be made publicly available. data is available only upon individual request. the requests may be sent to the dr. okulicz, u.s. air force lead investigator on the study. his email address is: jason.f.okulicz.mil@mail.mil<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>