The collection of any personal data (e.g. name, address or e-mail) by us on this internet page takes place, if possible, just voluntarily. The use of the content and services can, if possible, always be done without the declaration of personal data. We herewith point out explicitly that data transfer in the internet (e.g. communication via email) can have security vulnerability. A complete protection of all personal data against illegal access by unwarranted third persons is not possible. Herewith we disagree and forbit explicitly the use of any contact details named in the imprint (published due to the laws) by any third person for sending not explicitly asked for advertisement materials or information materials. The operator of this internet page herewith explicitly reserves the right to take any necessary legal step in the case of the unrequested sending of advertising materials or information materials, e.g. by spam mails.