<|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 relevant data are available in previous publications (reference 1) and in the supplementary online appendix (reference 10). these aggregated data by gender and age groups are also available from the authors and may be contacted at lena.bjorck@gu.se.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>