[Results and current objectives of Austro-Germano-Swiss working group for maxillary and facial tumors (DOSAK) (author's transl)].

The author describes the creation and field of activity of the Austro-Germano-Swiss working group for maxillary and facial tumors (DOSAK). The first problem discussed by the group was that of the comparison of therapeutic results in epitheliomas of the buccal mucosa, based on the classification established by the U.I.C.C. (Union Internationale Contre le Cancer) in 1973. The objective of DOSAK is to select the statistically confirmed best therapeutic protocols by conducting comparative clinical trials in several centres.