<|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 and legal restrictions in the approved ethical application, clinical study protocol and amendment to these for substudy of inflammatory and biochemical markers. data are available upon request from the corona study whose authors may be contacted at lars.gullestad@medisin.uio.no<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>