<|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: due to ethical restrictions imposed by the ethics committee of muhimbili university of health and allied sciences (dar es salaam, tanzania) related to protecting patient confidentiality, data cannot be made publicly available. interested researchers should contact grace mhalu (gmhalu@ihi.or.tz) for further information related to data access.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>