<|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: due to ethical restrictions, data are available upon request, both from the authors, and from mrs. alexandra froesch, departmental administrator, wellcome trust centre for neuroimaging, 12 queen square, london wc1n 3bg, uk.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>