<|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: this study was a meta-analysis. a literature search was performed in pubmed and embase for studies published up to march 2014 using the medical subject headings (mesh) terms or key words pregnancy, pregnancy outcome, perinatal, maternal, caffeine, coffee, birth weight, infant, and low birth weight (s1). reference lists of all retrieved articles were also reviewed for additional papers.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>