1. Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden
2. Institute of Chemistry, Bioorganic Chemistry; Hohenheim University; Garbenstraße 30 DE-70599 Stuttgart
3. Pharmaceutical Biology Department; University of Regensburg; Universitätsstraße 31 DE-93053 Regensburg