CJCP     2015 17 (9):  965-970    ISSN: 1008-8830  CN: 43-1301/R Clinical analysis and follow-up study of cardiavascular system involvement in 10 children with methylmalonic aciduria combined with hyperhomocysteinemia QI Yan-Hua, QI Jian-Guang, LIU Yu-Peng, YAN Hui, LIU Xue-Qin, ZHANG Xin, XIAO Hui-Jie, YANG Yan-Ling, DU Jun-Bao Department of Pediatrics, First Hospital of Peking University, Beijing 100034, China Received: 2015-05-15  Revised: 2015-07-31  Online: null Supporting info null