<|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. the current analysis has been done using part of data from the hiv-patient database maintained by the national aids control organization (naco) and consists of patient data routinely collected in the programme. the database contains confidential information and we do not have permission to share this. however, interested readers may contact the naco ethics committee for research of the ministry of health and family welfare, government of india. the nodal point for the said committee is the deputy director general, monitoring and evaluation and may be contacted at ddgme@naco.gov.in.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>