4Su X,Yuan W,Tan H,Liu X,Li D,,Li D,Huang G,Zhang L,Miao M*.CoORelation between Exposure to Magnetic Fields and Embryonic Development in the First Trimester.PLoS One.2014Jun 30;9(6):e101050.
5DK L,JR F,R O,et al.A Prospective Study of In-utero Exposure to Magnetic Fields and the Risk of Childhood Obesity[J].Nature Scientific Reports,2012,2(7):3597-3610.
6Goldenberg R,Culhane J,Iams J,et al.Preterm Birth 1:Epidemiology and Causes of Preterm Birth[J].Obstetric Anesthesia Digest,2009,29(1):6-7.