Geoffrey A. Manley Lehrstuhl fur Zoologie, Technical University of Munich, Garching, Germany.
Anthony W. Gummer is Professor at the University of Tübingen in the Department of Otolaryngology.
Arthur N. Popper is Professor Emeritus and Research Professor in the Department of Biology at the University of Maryland, College Park.
Richard R. Fay is Distinguished Research Professor of Psychology at Loyola University, Chicago.