1. Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2. Formula-pattern Research Centre, School of Traditional Chinese Medicine, Jinan University Guangzhou, Guangdong Province 510632, P. R. China
3. Division of General Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA
4. Clinical Medicine Division, Korea Institute of Oriental Medicine, Daejeon 34054, South Korea
5. Chemistry & French St. Olaf College, Northfield, MN 55057, USA