<|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 ethical and legal restrictions imposed by both the regional ethical committee for research (lund sweden) and the national ethical committee for human research (phnom penh), data are available upon request from the authors after ethical approval from the cambodian national ethical committee for health research, phnom pen. requests can be made out to the corresponding author.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>