Combined effect of polymorphisms of MTHFR and MTR and arsenic methylation capacity on developmental delay in preschool children in Taiwan

Yu‐Mei Hsueh, Ying‐Chin Lin, Chi‐Jung Chung, Ya-Li Huang, Ru‐Lan Hsieh, Pai-Tsang Huang, Mei‐Yi Wu, Horng-Sheng Shiue, Ssu-Ning Chien, Chih-Ying Lee, Ming-I Lin, Shu-Chi Mu, Chien‐Tien Su