Antirheumatoid Arthritis Effect of Rhus verniciflua and of the Active Component, Sulfuretin - Choi, Jongwon; Yoon, Byung-Jae; Han, Yong Nam; Lee, Kyung-Tae; Ha, Joohun; Jung, Hyun-Ju; Park, Hee-Juhn (Planta Medica, 2003)