<|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: all data are available in publications searchable through cochrane database of systematic reviews (http://www.cochrane.org/cochrane-reviews), cochrane central register of controlled trials, medline/pubmed (1950 to present [2015 june]), www.clinicaltrials.gov (searched for on-going trials or other concluded trials), and embase via ovid (1974 to present [2015 june]).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>