About the site


Please let us know if you notice any errors or inaccurate information on this website so that we can correct them as soon as possible. You can also make suggestions for improvement.

Please use the Send feedback page when you send us your messages.

Compatibility with web browsers and operating systems

The website has been tested with the most common combinations of web browsers and operating systems.

If the pages do not load correctly, try the following:

  • empty the cache
  • close your web browser (all windows) and start again, or
  • shutdown and restart your computer.


The attachments used on this site are in most cases pdf files. You can download the Adobe Reader program for free at www.adobe.com.

You need the Media Player or Real Player program to watch video files on the site. Download Media Player or Real Player (both free of charge).

Legal notice

In making the contents available, every effort is made to keep the information up-to-date and accurate. The PRH is not responsible for any expenses or damage incurred by the user because of errors that might exist on the site. Nor is the PRH responsible for any harm caused by technical errors.


The PRH owns the copyright to the texts and images published on the website.

The text materials can be used and linked freely as long as the source is acknowledged. Use of the material for commercial purposes requires prior agreement with the PRH.

Handling of personal data

The PRH is committed to protecting the privacy and personal data of visitors to the website, as required by the Personal Data Act. We do not collect data that would make it possible to identify individual visitors.


The website uses session cookies. A cookie is a small text file that is sent to the user's computer and stored on the computer. Cookies do not damage the user’s computer or files.

Session cookies are stored in the computer's memory during a browsing session and are deleted when the browser is closed.

Only tracking cookies (permanent cookies) that are used to identify new and returning visitors are stored.

Data collected by cookies:

  • the user’s IP address
  • time of day
  • the pages viewed
  • browser type

The data helps us to improve the functionality and contents of the website.

Most web browsers allow you to deactivate the storing of cookies.

Printable version
Latest update 02.09.2020