<|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: all data are only available upon request to the senior author (legal guardian of the data). this option follows the local laws and ethical regulations that apply to confidentiality of clinical/medical data.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>