<|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: ethical approval precludes the data being used for another purpose or being provided to researchers who have not signed the appropriate confidentiality agreement. these restrictions are as per the bannatyne biomedical research ethics board, university of manitoba (bannatynereb@umanitoba.ca). in accordance with ethical approval, all results are in aggregated form to maintain confidentiality and privacy. the data is held at the manitoba palliative care research unit, winnipeg, canada.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>