Abstract
The following members attended the meetings Nov 4–7, 1968, and working papers were submitted in advance from nearly all of them. In addition, working papers were submitted by A. Korbakova, MD, Institute of Occupational Health, Moscow, USSR, and Folmer Nielsen-Kudsk, MD, Institute of Pharmacology, University of Aarhus, Aarhus, Denmark. Unfortunately they were unable to attend the symposium.