<|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: due to ethics restrictions regarding consent to share participant data, data are available upon request. requests for the data may be sent to prof matthias egger (matthias.egger@ispm.unibe.ch), dr. mary-ann davies (mary-ann.davies@uct.ac.za), and dr. gilles wandeler (gilles.wandeler@ispm.unibe.ch).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>