<|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 cannot be made publicly available for ethical or legal reasons. Public availability would compromise patient confidentiality, privacy and also safety. Restrictions are justified because of the research issue (racism) as well as the political situation during the research (2012 Mexican general election) and the actual violence in state of Veracruz. Informal approval has been obtained by the Universidad Veracruzana and the Justus-Liebig University of Giessen (Germany) in the context of the conducted and 2018 finalized doctoral thesis. The ethics committee is as follows: Ethik-Kommission des FB Medizin, Medizinisches Lehrzentrum 3. OG, Klinikstra√üe 29, 35392 Gie√üen (https://www.uni-giessen.de/fbz/fb11/dekanat/ethikkommission). Data requests can be sent to: michael.knipper@histor.med.uni-giessen.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>