41 educational services, namely, providing seminars for the instruction and further education of doctors and personnel in the fields of rehabilitation and medical care of spinal columns; providing education training services for doctors and personnel for operating techniques, the use of operating techniques, and the use of medical and/or technical products in the fields of rehabilitation and medical care of spinal columns; and preparation of teaching means, namely, the production of video films in the fields of rehabilitation and medical care of spinal columns