<|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: our individual level participant data includes identifiers of age, gender, income, employment, living situation, use of illicit drugs and symptom severity scores, all of which are needed for analyses. we cannot provide this data due to potential privacy infringement and related ethical and legal obligations to participants as restricted by the university of british columbia clinical research ethics board and simon fraser universitys research ethics board. for all requests regarding data, please contact the clinical research ethics board, university of british columbia (ethics.research.ubc.ca) and the responsible authors at aethornt@sfu.ca and william.honer@ubc.ca.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>