<|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 data sets comprise data for individual patients. confidential patient information may thus be revealed if the data were shared or made public. the data are handled strictly confidentially by the norwegian institute of public health, as required by norwegian law. for further information contact jon helgeland.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>