<|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 from the helsinki psychosis study, whose authors may be contacted at national institute for health and welfare (principal investigator: jaana suvisaari; jaana.suvisaari@thl.fi). in research collaboration, sharing of the data is possible but requires amendment to the ethics committee permission and a separate agreement with thl. the ethics committee will evaluate on a case-by-case basis whether the intended collaboration is concordant with the consent given by the participants.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>