External quality and proficiency evaluation of syphilis laboratories in Shandong in 2017
LI Furong, WEN Jing, LIU Danxuan, YU Yongxiang, ZHAO Xiaoting, XU Xianghu, YUE Shan, WEI Yuning, HE Yanqing
China Journal of Leprosy and Skin Diseases
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2018, (11): 663
-664,668
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