<|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: data cannot be made publicly available due to ethical restrictions. the current study has been carried out in the framework of the tehran lipid and glucose study (tlgs) which is a large population-based cohort. it is an ongoing study and has a steering committee who manages the data and ethical issues. requests for data can sent to: prof. fereidoun azizi, the pi of the study (email: azizi@endocrine.ac.ir) or dr parvin mirmiran (email: mirmiran@endocrine.ac.ir).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>