1Kennedy KA,Brennan MC,Raybum WF,et al.Attrition rates between residents in obstetrics and gynecology and other clinical specialties,2000-2009[J].J Grad Med Educ,2013,5(2):267-271.
2Makelarski JA,Lindau ST,Fabbre VD,et al.Are your asset data as good as you think? Conducting a comprehensive census of built assets to improve urban population health[J].J Urban Health,2013,90(4):586-601.