CJCP     2015 17 (10):  1142-1147    ISSN: 1008-8830  CN: 43-1301/R Progress in management of patent ductus arterious in preterm infants with gestational age of <28 weeks TIAN Fang, SHI Wen-Jing Children's Hospital, Fudan University, Shanghai 201102, China Received: 2015-02-28  Revised: 2015-04-14  Online: null Supporting info null