<|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: Disease (dengue) data are available by requested from European Centre for Disease Prevention and Control (ECDC); The air travel data used in this study are owned by the International Air Travel Association(IATA), limited access to this data was furnished under a non-disclosure agreement by International Air Travel Association (IATA)- Passenger Intelligence Services (PaxIS), strictly for the purpose of a doctoral thesis. Sources of all other relevant data are referenced within the paper.   https://www.iata.org/services/statistics/intelligence/paxis/Pages/index.aspx   https://www.ecdc.europa.eu/en/publications-data/european-surveillance-system-tessy<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>