Subchronic toxicological study of two artemisinin derivatives in dogs. oleh Ji-ye Yin, He-mei Wang, Quan-jun Wang, Yan-sheng Dong, Gang Han, Yong-biao Guan, Ke-yong Zhao, Wen-sheng Qu, Ye Yuan, Xiao-xin Gao, Shu-fang Jing, Ri-gao Ding