Internal audit result analysis of proficiency testing provider quality management system and strategies for improvement
GUO Xiaojun, FAN Jinong, XU Chong, ZHU Jun, YANG Xue, LOU Jiao, HUANG Yanjun
Laboratory Medicine . 2018, (7): 653 -656 .  DOI: 10.3969/j.issn.1673-8640.2018.07.018