<|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. the data underlying the findings of this manuscript are held by the norwegian institute of public health (niph). access to the data is therefore restricted by the policies of niph. before data can be released a full application must be submitted and in most cases a contract must be signed with the norwegian institute of public health. to apply for statistical data in the form of ready-made tables use this application form: http://www.fhi.no/dokumenter/aabd86f88b.doc additional information about access to data from the norwegian mother and child cohort study are obtained from the norwegian institute of public health(www.fhi.no). all enquiries about access to data should be sent to datatilgang@fhi.no.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>