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Statement of limited liability 
The contents of this website have been drawn up with the greatest possible degree of care. However, the publisher does not guarantee the correctness, completeness and up-to-dateness of its contents. Use of the contents of the website is made at the user's own risk. The contributions of authors whose names are given express the opinions of such authors and these are not necessarily always the opinion of the publisher. No contractual relationship between the user and the publisher is created just by making use of the publisher's website.

External links
These websites contain external links to the websites of third parties. These websites are subject to the liability of the respective operator. The publisher has checked the third-party website contents at the time of making the first connection of the external links to ascertain whether there were any legal violations. At that time there were no legal violations that were apparent. The publisher has no influence over the current and future form and over the contents of the pages to which the link has been made. The establishing of external links does not signify that the publisher is adopting as its own the contents of such references or links. Exercising continuous checks of the external links is not reasonable for the publisher without having any concrete evidence of legal violations. Upon becoming aware of any legal violations, however, any external links of this nature will be immediately deleted. 

Copyrights and other intellectual property rights 
This website contains texts, illustrations, logos, graphics, audio files, animations and videos that are the property of the BBC Group or of companies connected to it and which are subject to the protection of the laws on intellectual property rights or to other protective laws. The use for commercial purposes of the contents of this website through any form of reproduction, diffusion and alteration is forbidden. We would advise in this respect that infringement of our copyright or other intellectual property rights can be subject to civil or criminal sanctions. 

Data protection 
Information concerning the access (date, time, pages looked at) may be stored. This data is not personal data, but is anonymised and is subject to Swiss Data Protection Laws. This information will be exclusively evaluated for statistical purposes. Any disclosure to third parties for commercial or non-commercial purposes shall not take place. The publisher expressly states in this respect that data transfer on the Internet does have security-related vulnerabilities and cannot be fully protected against access by third parties. 

Google Analytics
This website uses Google Analytics, a website analysis service of Google Inc. (Google). Google Analytics uses cookies (text files), which are stored on your computer and which enable you to analyse the usage of this website (including your IP address). The information that is produced on your use of this website (including your IP address) is transmitted to a Google server in the USA and stored there. Google will use this information in order to evaluate your use of the website in order to generate reports on the website activities for the website operators and, in order to render services related to the website, usage and Internet use. Google will also transmit this information if need be to third parties providing that this is legally prescribed or for third parties to process this information on behalf of Google. Google will in no case combine your IP address with other data of Google Inc. You can prevent the storage of cookies by making a corresponding adjustment of your browser software, but we would advise that in this case you may not be able to use all of the functions of this website to their full extent. You can, in addition, prevent the collection on Google of the data that is produced by the cookie and which relates to use of the website (including IP address) and prevent the processing of this data by Google by downloading and installing the browser-plug-in under the following link:

Applicable law 
This data protection declaration is subject to Swiss Law and is to be interpreted as per Swiss Law. You will be obliged to make any disputes arising from your use of this website exclusively subject to the jurisdiction of the laws of Switzerland.