Bismuth chelate as a contrast agent for X-ray computed tomography oleh Ji-jun Fu, Jun-jie Guo, Ai-ping Qin, Xi-yong Yu, Qiang Zhang, Xue-ping Lei, Yu-gang Huang, Ming-yue Chen, Jie-xia Li, Yu Zhang, Jing-ping Liu, Yuan-ye Dang, Dan Wu, Xiao-ya Zhao, Zhong-xiao Lin, Yin-lei Lin, Song-pei Li, Ling-yan Zhang