Arsenic methylation capability, myeloperoxidase and sulfotransferase genetic polymorphisms, and the stage and grade of urothelial carcinoma

Steven K. Huang, Wen-Hsiang Chiou, Yeong Shiau Pu, Yung-Kai Huang, Chi Jung Chung, Hui J. Tsai, Mo Hsiung Yang, Chien Jen Chen, Yu-Mei Hsueh