1. Department of Analytical Development & Research; Section Phytochemical Research; WALA Heilmittel GmbH; Dorfstr. 1 DE-73087 Bad Boll/Eckwälden Germany
2. Institute of Botany (210); University of Hohenheim; Garbenstraße 30 DE-70599 Stuttgart Germany
3. Institute of Chemistry, Bioorganic Chemistry (130b); University of Hohenheim; Garbenstraße 30 DE-70599 Stuttgart Germany