<|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 study in itself does not involve the use of donated tissue and/or organs. this is a registry study of anonymised donors and recipients from data routinely collected by nhsbt. the donors and/or donor families have consented/assented to the use of tissues for transplantation and recipients have undergone a formal consent process prior to transplantation. the study data is available on request from national health service blood and transplant (nhsbt). nhsbt collects, records and analyses data concerning potential and actual organ donors, patients registered for transplant, transplant recipients including long-term follow-up information and individuals registering on the nhs organ donor register in the united kingdom. as a result the minimal dataset is not ours to publish, however the dataset is freely available from nhsbt on request (the process for requesting data can be seen at http://www.odt.nhs.uk/uk-transplant-registry/data/data-access-policy/; last accessed 15th december 2015).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>