1. Faculty of Pharmacy, Andalas University, Kampus Limau Manis, Padang 25163, West Sumatra, Indonesia
2. Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
3. Faculty of Pharmaceutical Sciences at Kagawa, Tokushima Bunri University, Sanuki-city, Kagawa 769-2193, Japan