Analysis of excluded and confirmed cases of COVID-19 in Henan province

PAN Jing-jing, FAN Wei, WANG Wen-hua, NIE Yi-fei, YOU Ai-guo, WANG Bo-hao, YE Ying, HUANG Xue-yong, GUO Wan-shen△

Tianjin Medical Journal . 2020, (6): 470 -473 .