<|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: most of the data are freely available on the websites that are referred to in the paper (epidemiological data of the diseases). however, some of the data (such as control campaign funding and data of specifics related to the management of the campaigns), are restricted under ecuadorian law. if the restricted data is required, readers may contact the director of intelligence in the ministry of public health, dr. santiago escalante (sescalante@msp.gob.ec). a confidentiality agreement must be signed and the ministry must approve release of data so as to avoid any misuse of the data.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>