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Karl Andreas Schlegel declares that he has no conflict of interest. Marco Kesting declares that he has no conflict of interest. Matthias Fenner declares that he has no conflict of interest. Rainer Lutz declares that he has no conflict of interest. Daniele Machado Beck declares that she has no conflict of interest. Cornelius von Wilmowsky declares that he has no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The presented work was approved by the Pest county government department for food safety and animal health, Hungary (approval number: 1112\/000\/2003).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"For this type of study, formal consent is not required.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}