<|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 is not publicly available for ethical and legal reasons instituted by the university of calgary conjoint health research ethics board (chreb). patient consent does not allow data sharing and the details collected could allow identification of participants. all of the aggregate data are included in the paper. any questions about the data can be directed to the corresponding author, dr luanne metz at lmetz@ucalgary.ca.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>