Clinical and imaging features of premature infants with different degrees of bronchopulmonary dysplasia
REN Yan-Li, KONG Xiang-Yong, DU Zhi-Fang, FENG Zhi-Chun, HUANG Jun-Jin, CHEN Jia, ZHANG Shan
CJCP . 2015, (5): 440 -444 .  DOI: 10.7499/j.issn.1008-8830.2015.05.005