Authors: Zeping Hu; Xiaoxia Yang; Paul Chi Lui Ho; Sui Yung Chan; Paul Wan Sia Heng; Eli Chan; Wei Duan; Hwee Ling Koh; Shufeng Zhou Journal: Drugs Date: 2005 Impact factor: 9.546
Authors: Grace M Kuo; Sarah T Hawley; L Todd Weiss; Rajesh Balkrishnan; Robert J Volk Journal: BMC Complement Altern Med Date: 2004-12-02 Impact factor: 3.659