<|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 data related to this manuscript are extracted from the clinical charts based on an approved research e5thics board protocol. The data in its anonymous and aggregate form is stored properly at the principle author's site<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>