1. Central Research Laboratories, Wakunaga Pharmaceutical Co., Ltd.
2. Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
3. National Institute of Hygienic Sciences, Tsukuba Medicinal Plant Research Station
4. Tokyo College of Pharmacy
5. Faculty of Pharmaceutical Sciences, Teikyo University
6. Medicinal Plant Garden, School of Pharmaceutical Sciences, Kitasato University
7. Faculty of Pharmaceutical Sciences, Showa University
8. Garden of Medicinal Plants, Kyoto Pharmaceutical University