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Copyright and disclaimer

Although we take great care to ensure the accuracy and quality of CNV websites, it is possible that some published information could be erroneous or incomplete. Some errors (in the processing of information) cannot be avoided.  


Therefore, we cannot guarantee that any or all of the information published will always be completely appropriate and applicable for other research aims or purposes. All information, products, and services are presented in their factual state, without any implicit guarantee or safeguard in respect of their reliability and/or suitability for a specific purpose. 

We exclude any and all liability for any direct or indirect damages, whatever their nature, resulting from or in any way connected with the use of CNV websites, or with the temporary impossibility to consult with the sites. We also cannot be held liable for any direct or indirect damages which might be the consequence of using information obtained from the website(s). 

The information on the websites is supplemented on a daily basis and changes may be made at any time and with immediate effect without any prior notice.


The Creative Commons license is applicable to CNV website texts, unless it is otherwise noted.

This means website content may be used and/or adapted for non-commercial purposes as long as the text source is cited.

For photographs and images, permission is required before they can be used.

This license is not applicable to information which is only available to members when they are logged on.  


In principle, links and references from on the internet are permitted. The website editors (through c.johannes@ [remove this] would appreciate being notified in advance when these are going to be used. 


Please contact the website editors at if you have any questions about the website (links, layout, function, content).