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1 A comparative study on the obstetric services utilization by income classes among the National Health Insurance Beneficiaries
Kyung Ha Kim, Rah Il Hwang, Ji Won Yoon, Ki-Jin Ryu, Soon-Cheol Hong
Korean J Obstet Gynecol.2012;55(11):804-813.   Published online 2012 November 16     DOI: http://dx.doi.org/10.5468/KJOG.2012.55.11.804
      
2 Diet Quality and Food Patterns of Obese Adult Women from Low Income Classes -Based on 2005 KNHANES-
Jin-Sook Yoon, Heekyung Jang
Korean J Community Nutr.2011;16(6):706-715.   Published online 2011 December 31     DOI: http://dx.doi.org/10.5720/kjcn.2011.16.6.706
      

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