1. Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
2. Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
3. Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
4. Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
5. College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
6. Immunomodulation of Natural Products Research Unit, Chulalongkorn University, Bangkok 10330, Thailand