“Yellow-dragon Wonderful-seed Formula” for hyperuricemia in gout patients with dampness-heat pouring downward pattern: a pilot randomized controlled trial oleh Xiao Ning Yu, Hai Yan Wu, Yuan Ping Deng, Guang Tong Zhuang, Bang Huan Tan, Yan Zhou Huang, Shi Yun Tang, Xiang Tu, James B Jordan, Sen Zhong