1 Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
2 Department of Biology, Faculty of Mathematics and Natural Sciences, Research Center of Smart Molecule of Natural Genetics Resources, Brawijaya University, Malang, East Java, Indonesia.
3 Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan.
4 Department of Pharmacology, University of Vermont College of Medicine, Burlington, VT, USA.