<|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. data are from vigitel study - vigilância de fatores de risco e proteção para doenças crônicas por inquérito telefônico (in english: telephone survey surveillance system for risk and protective factors for chronic diseases). vigitel database was furnished by the brazilian ministry of health. interested independent researchers may request the data at: http://svs.aids.gov.br/bases_vigitel_viva/ instructions for downloading are in portuguese. in case of difficulties, interested readers may contact the corresponding author and/or the coauthor deborah carvalho malta at: devdantps@saude.gov.br.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>