<|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 of this study. according to the authors ethical approval, granted by the ethics committee of the rwht aachen university to the forschungszentrum jülich, data and results presented in this manuscript will be available upon request to prof. n. jon shah (n.j.shah@fz-juelich.de).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>