<|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: our study dataset contains data obtained between 1990 and 2015 from our patients (chru lille hospital) and from patients addressed to our laboratory unit by external hospitals for diagnosis purposes. hence, the informed consent forms signed by the participants do not include a data use for external research teams. a new informed consent form signed by the participants and a new submission to the competent ethics committee would be necessary in order to authorize such use. researchers interested in initiating this process should contact the corresponding author.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>