This website uses Piwik, an open source software for statistical evaluation of visitor access. Piwik uses so-called “cookies”, text files that are stored on your computer and that enable an analysis of your use of the website. The information generated by the cookie about your use of the website is stored on a server in Germany. The IP address is anonymized immediately after processing and before it is saved. You have the option of preventing the installation of cookies by changing the settings of your browser software. We would like to point out that with the appropriate setting, not all functions of this website may be available. You can decide whether a unique web analysis cookie may be stored in your browser to enable the operator of the website to collect and analyze various statistical data.