1. Laboratory of Natural ProductsInstitute of Bioscience, Universiti Putra Malaysia Serdang Selangor Malaysia
2. Hebei Key Laboratory of Research and Development for Traditional Chinese MedicineChengde Medical University Chengde Hebei P. R. China
3. Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular SciencesUniversiti Putra Malaysia Serdang Selangor Malaysia
4. Department of Human Anatomy, Faculty of Medicine and Health SciencesUniversiti Putra Malaysia Serdang Selangor Malaysia
5. Department of Chemistry, Faculty of ScienceUniversiti Putra Malaysia Serdang Selangor Malaysia