41 Holding and organization of seminars for the instruction and further education of doctors and personnel; instruction and further education of doctors and personnel, in particular with respect to operating techniques, the use of operating techniques and the use of medical and/or technical products, in particular with respect to the rehabilitation and medical care of joints, osteosynthesis and spinal columns; preparation of communication and teaching means, in particular the production of video films and the production of computer assisted information, and online via the Internet