<|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 underlying the findings cannot be made publicly available in order to protect patient privacy and comply with brazilian law. data from maternal deaths can be obtained upon request from secretary of health surveillance (secretaria de vigiläncia em saïde) of ministry of health, brasõlia, df, brazil. readers may contact dr. dàcio de lyra rabello neto (cgiae-dasis-svs) at dacio.rabello@saude.gov.br. data from controls can be obtained upon request from department of epidemiology and quantitative methods in health, s_rgio arouca national school of public health, oswaldo cruz foundation, rio de janeiro, rj, brazil. readers may contact dr. maria do carmo leal at duca@ensp.fiocruz.br.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>