2.5 Data extraction
Three authors (Ma, Pan, and Fan) independent use standard form, the following data extracted from each article: the first author’s last name, year of publication, sample size, age, sex, etiology, time recorded point, the outcome indicators (CRP, Serum amylase, TNF-α, CRP,PCT,IL-6 levels after treatment, liver and kidney function, APACHEII scores after treatment). If the raw data is not evident in the article, we will contact the author to ask whether the raw data is available. If the occasion should arise, we do not extract the data completely.