<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. the original hvtn 503/phambili dataset  the dataset used for this current study  is available on request from the statistical center for hiv/aids research & prevention (scharp) at the hiv vaccine trials network (hvtn) (email: sc.reception@scharp.org). the requests are screened by the hvtn to ensure that the data will be used in accordance with what participants' consented. therefore, the data is not available in a public repository.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>