<|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 is owned by the study site and national department of health (south africa) and governed by the human research ethics committee (university of witwatersrand, johannesburg, south africa). all relevant data is included in the paper and supplementary tables. the full data are available from the health economics and epidemiology research office for researchers who meet the criteria for access to confidential data and have approval from the owners of the data (information@heroza.org).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>