<|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: the authors confirm that all data underlying the findings are fully available without restriction. the courage project is a collaborative effort between several european institutions and the world health organization. the questionnaire is based on the who's sage study in order to allow for comparisons across countries. researchers may make requests for access to the sage database through http://www.who.int/healthinfo/sage/en/. due to legal restrictions, data from the courage study is available on request from the courage study team. the contact details are: beatriz.olaya@pssjd.org (spain), seppo.koskinen@thl.fi (finland), mytobias@cyf-kr.edu.pl (poland).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>