Department of Dermatology, Sainte Elisabeth Hospital, B-5000 Namur, Belgium. VIVES University College, Wilgenstraat 32, B-8800 Roeselare, Belgium. University of Liège, Quai Edouard Van Beneden 22, B-4020 Liège, Belgium. Department of Microbial Physiology and Ecology, University of Brussel, Bruxelles, B-1050 Brussels, Belgium. Superior Health Council, Place V. Horta, 40, bte 10, B-1060 Brussels,...
