<|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: all data are maintained and made freely available by the department of informatics of the brazilian public health system. brazils public healthcare system (sus), department of data processing (datasus), 2011. available: http://www.datasus.gov.br/. date of access: 01 2015 jan.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>