Risk factors for necrotizing enterocolitis in preterm infants: a Meta analysis.

Objectives: To systematically evaluate the risk factors for necrotizing enterocolitis (NEC) in preterm infants.

Methods: PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, and Wanfang Data were searched for case-control studies and cohort studies on the risk factors for NEC in preterm infants published up to December 2021. RevMan 5.

Characterization of the complete chloroplast genome of var. .

As a new variety of L., var. has high development and utilization values because of its high flowering and fruiting rates and yield.