<|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 are available from the local ethics committee of the charité  university hospital berlin and the ethics committee of northwest and central switzerland (eknz) for researchers who meet the criteria for access to confidential data. contact: local ethics committee of the charité  university hospital berlin, charitéplatz 1, 10117 berlin, germany, t: +49 30 450 517 222, f: +49 30 450 517 952. ethics committee of northwest and central switzerland (eknz), hebelstrasse 53 4056 basel, switzerland, t: +41 61 268 13 50, f: +41 61 268 13 51.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>