<|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: results and data supporting our results are available in our manuscript (statistical values). original data files, such as mri scans, are only available upon request because of patient confidentiality. data can be made available to individuals upon request by contacting: anna böttcher (anna.boettcher@unimedizin-mainz.de), dr. andreas fellgiebel (andreas.fellgiebel@unimedizin-mainz.de), or dr. julia hennermann (julia.hennermann@unimedizin-mainz.de).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>