CJCP     2016 18 (10):  980-983    ISSN: 1008-8830  CN: 43-1301/R Serum level of vitamin A in children with pneumonia aged less than 3 years JIANG Yi-Ling, PENG Dong-Hong Department of Pneumology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China Received: 2016-04-18  Revised: 2016-06-29  Online: null Supporting info null