<|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 underlying the findings presented in the study are freely available in the manuscript or in the supplementary materials. additional data can be requested by contacting the corresponding author (dr. m. wagner, wagner_m@ukw.de) or the principle investigators of the study (prof. dr. c. wanner, wanner_c@ukw.de or prof. dr. l. schramm, l.schramm@dialyse-wuerzburg.de). the data are also accessible online at data-dryad (datadryad.org; doi:10.5061/dryad.br52k).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>