<|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 on the centers for disease control website for download: https://nchs.beyond2020.com/vitalstats/reportfolders/reportfolders.aspx?if_activepath=p,22,176 http://www.cdc.gov/nchs/data_access/vitalstats/vitalstats_births.htm http://www.cdc.gov/nchs/data_access/vitalstatsonline.htm.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>