CJCP     2020 22 (4):  387-390    ISSN: 1008-8830  CN: 43-1301/R Cyanosis for more than 4 years in a girl aged 4 years and 3 months WU Mao-Lan, ZHENG Xiang-Rong, ZHU Yan-Tong, ZHANG Guo-Yuan, LIU Chen-Tao, WANG Xia, TANG Yong-Jun Department of Pediatrics, Xiangya Hospital, Central South University, Changsha 410008, China Received: 2019-10-28  Revised: 2020-03-11  Online: null Supporting info null