<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. all data is housed at the british columbia centre for excellence in hiv/aids drug treatment program. given that we must protect the identity of drug treatment program participants we can not provide our study data to the public. we do not allow qualified researchers to obtain our data nor would it be possible to share anonymized data that underlie the summary statistics presented in this manuscript. if you have further questions regarding our data sharing and privacy policy please do not hesitate to contact our director of operations, ms. irene day at iday@cfenet.ubc.ca or our centre director, dr. julio montaner at jmontaner@cfenet.ubc.ca.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>