<|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 data used in this analysis are owned by the clinical research sites and managed by the hiv vaccine trials network (hvtn). in accordance with network policy, other researchers can request permission to access the data in the same manner it was granted to the authors. requests for access to study data should be sent to the hvtn: vtn.research@hvtn.org or by completion of a form on the hvtn website: http://www.hvtn.org/en/science/submit-idea-proposal/idea-submission.html. use of this data requires approval by the national institutes of allergy and infectious diseases (niaid), the niaid vaccine research center (vrc), and the hvtn. if approved, data from this study will be provided by grant of access to a secure web portal. resulting publications need to abide by hvtn publication requirements, including review with the niaid, the vrc and the hvtn prior to publication.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>