<|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: data are from the wa aboriginal child health survey (waachs 2000-2002) and are available upon request, as imposed by the w.a. aboriginal health ethics committee. data are available for researchers who meet the criteria imposed by these ethical bodies for access to confidential data. chief investigator, prof stephen zubrick, may be contacted at the telethon kids institute, subiaco, western australia (stephen.zubrick@telethonkids.org.au).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>