Analysis on external quality assessment for national prepregnancy health examination project
GAO Zhangquan1,2, LI Guozheng1,2*, ZHAO Jianhong3, CHEN Zhuaisheng1,2, WANG Shuhong1,2, LIU Xiaolei3
Journal of Hebei Medical University . 2017, (2): 196 -200 .  DOI: 10.3969/j.issn.10073205.2017.02.018