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1 The Risk of Spontaneous Preterm Birth according to Maternal Pre-pregnancy Body Mass Index in Twin Gestations
Su Jin Sung, Seung Mi Lee, Sunmin Kim, Byoung Jae Kim, Chan-Wook Park, Joong Shin Park, Jong Kwan Jun
J Korean Med Sci.2018;33(13):e103.  Published online 2018 March 7     DOI: http://dx.doi.org/10.3346/jkms.2018.33.e103
      

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