Figure legend
Figure A Abbreviations: CENTRAL, Cochrane central register of controlled
trials; CINAHL, Cumulative index to Nursing and Allied Health
Literature; RCT, randomized clinical trial
Figure B
The analyses were conducted using random effects models. Abbreviations:
BPD, bronchopulmonary dysplasia; ; IVH, intra ventricular hemorrhage;
NEC, necrotizing enterocolitis; NDI, neuro developmental impairment;
PMA, postmenstrual age; PVL, periventricular leukomalacia;