<|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: data are from the singapore chinese health study, and the authors did not seek approval from the irb to make the data publicly available. according to the singapore personal data protection act, the authors could not release the data without approval from irb. researchers who meet the criteria for access to confidential data may contact the principal investigators of singapore chinese health study at prof jian-min yuan (yuanj@upmc.edu) and prof woon puay koh (woonpuay.koh@duke-nus.edu.sg) to seek approval from the national university of singapore irb.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>