CJCP     2017 19 (3):  313-317    ISSN: 1008-8830  CN: 43-1301/R Changes in serum chromogranin A and urotensin II levels in children with chronic heart failure CHENG Yao-Yao, AN Jin-Dou, FENG Song, GE Wei Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China Received: 2016-09-30  Revised: 2016-12-21  Online: null Supporting info