<|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: ethical and legal restrictions prevent public sharing of data. data may be requested from thomas riedel (thomas.riedel@insel.ch), head, irb, ethikkommission der universitätskinderkliniken, university of bern, department of pediatrics, inselspital and from roland a. ammann md (roland.ammann@insel.ch), university of bern, department of pediatrics, inselspital, bern, switzerland.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>