<|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: the data set contains identifying patient information which is unsuitable for public deposition. data are available upon request and requests may be sent to the massachusetts general hospital institutional data access / ethics committee. data are from the harvard again study whose authors may be contacted at kajohnson@partners.org or sepulcre@nmr.mgh.harvard.edu.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>