<|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 raw data for the present study was collected at 17 separate sites where liver transplantations were performed. because the hivtr is a registry of patients who underwent surgical procedures at 17 sites, there are ethical restrictions to uploading the fully dataset prior to requests. the authors have, however, included the raw data that allows the principal analyses required for figs 1 and 3 to be performed again as a supplementary "limited anonymous data set". the authors feel that to provide a more expanded data set that would allow the reproduction of figs 2 and 4 could compromise patient confidentiality. to expand on this point, because the hivtr is a registry that accounted for 84% of all liver transplants that were performed in the us during the study period in hiv/hcv co-infected persons, and because the final models were adjusted for a) the presence of kidney-liver transplantation, b) bmi, and c) donor age, the authors believe that there may be sufficient data in an expanded data set to be able to identify individual patients among the 69 hivtr participants. however, data will be made fully available upon request to the study pi at ucsf, dr. peter stock.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>