1. Research Group “Pharmacognosy and Phytotherapy”, UCL School of Pharmacy, London, UK
2. Research Centre for Optimal Health, School of Life Sciences, College of Liberal Arts and Sciences, University of Westminster. London, UK
3. Institute of Systematic and Evolutionary Botany, University of Zürich, Zürich, Switzerland
4. Institute of Anatomy, University of Zürich, Zürich, Switzerland