<|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. data is available from third party; the swedish national board of health and welfare and statistics sweden. according to swedish law, the authors are not able to share the register data used in this study with other researchers. any researcher interested in obtaining the data used can do so by formally applying to the swedish national board of health and welfare and statistics sweden after obtaining an ethical permission from a regional ethical review board in sweden.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>