CJCP     2014 16 (11):  1100-1104    ISSN: 1008-8830  CN: 43-1301/R Clinical features and genome-wide copy number variation analysis in 60 children with early-onset epileptic encephalopathies of unknown cause MA Yu-Ping, PENG Jing, WANG Ying, CHEN Yun, WU Li-Wen, YIN Fei Department of Pediatrics, Xiangya Hospital of Central South University/Hunan Intellectual and Developmental Disabilities Research Center, Changsha 410008, China Received: 2014-03-18  Revised: 2014-05-14  Online: null Supporting info