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All Keywords
【저자키워드】 COVID-19, Epidemiology, COVID-19, Coronavirus disease 2019, lianhua qingwen, close contacts, positive rate, IQR, interquartile range, PCR, polymerase chain reaction, CI, Confidence interval, ICU, Intensive care unit, LHQW, Lianhua Qingwen Capsule, TCM, traditional Chinese medicine, CMH, Cochran-Mantel Haenszel test, IPTW, inverse probability of treatment weighting,
【저자키워드】 COVID-19, Epidemiology, COVID-19, Coronavirus disease 2019, lianhua qingwen, close contacts, positive rate, IQR, interquartile range, PCR, polymerase chain reaction, CI, Confidence interval, ICU, Intensive care unit, LHQW, Lianhua Qingwen Capsule, TCM, traditional Chinese medicine, CMH, Cochran-Mantel Haenszel test, IPTW, inverse probability of treatment weighting,