<|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: data were obtained from the national als registry and can be retrieved in the same way the authors received them. interested researchers should contact the als registry to request data access https://wwwn.cdc.gov/als/contactus.aspx.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>