CJCP     2013 15 (8):  623-626    ISSN: 1008-8830  CN: 43-1301/R Etiology and prevention of neonatal pneumothorax JI Ling, HUANG Na-Na, CHEN Dan Department of Neonatology, Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. jiling1225@126.com Received: null  Revised: null  Online: null Supporting info