Clinical Characteristics of Two Human to Human Transmitted Coronaviruses: Corona Virus Disease 2019 versus Middle East Respiratory Syndrome Coronavirus.

Ping Xu; Guo-Dong Sun; Zhi-Zhong Li

At the beginning, 4743 potential publications were identified. We removed 678 duplicates and reviewed the titles and abstracts of remaining 4065 publications. 4015 publications were excluded for following reasons: not involved research point (n = 1378), review (n = 569), no English (n = 33), case report (n = 316), meta-analysis (n = 1), letter (n = 127), technology report (n = 196), commentaries (n = 61), animal study (n = 1107), correspondence (n = 29), predictive study (n = 110), guidence (n = 28), meeting report ( n = 16) and radiograph (n = 44). Then, a comprehensive review of full-text was conducted for remaining 50 publications. Two reviewers independently screened eligible literature, and any argument was solved by discussion with a third reviewer. Finally, thirty-two studies were included in this study . The process was shown in Figure 1 .