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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 is available upon request due to ethical restrictions (it contains personal information which may identify study participants; this restriction is stated in the ethical committee permission). requests to access the data can be made to the national institute for health and welfare finland office. the principal investigator (anne koivisto) has access to all data and can request permission for another researcher to access the data if necessary. alsova study group leader and principal investigator: anne koivisto md, phd, adjunct professor, senior neurologist consultant neurology, institute of clinical medicine, university of eastern finland, neuroogy of neuro center, kuopio university hospital, kuopio, finland anne.koivisto@kuh.fi<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>