CJCP     2022 24 (7):  797-805    ISSN: 1008-8830  CN: 43-1301/R Association of maternal MTHFD1 and MTHFD2 gene polymorphisms with congenital heart disease in offspring CHEN Qian, HUANG Peng, SONG Xin-Li, LIU Yi-Ping, SUN Meng-Ting, WANG Ting-Ting, ZHANG Sen-Mao, QIN Jia-Bi Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha 410078, China Received: 2022-03-02  Revised: null  Online: null Supporting info