1. Department of Paediatrics, Clinical Center of the University of Pécs, Medical School, University of Pécs, Pécs, Hungary
2. Institute of Geobotany/Plant Ecology, Martin-Luther-University, Halle (Saale), Germany
3. BENEO-Institute, c/o BENEO GmbH, Obrigheim, (Germany)
4. Department of Public Health Medicine, Medical School, University of Pécs, Pécs, Hungary