CRP and COVID-19: The results suggested that study course and distinct stages of COVID-19 may be the source of heterogeneity for negativity time of nucleic acid; sex(male%) may cause the heterogeneity for the level of neutrophils count; dosage formulations and usage may be the source of heterogeneity for the level of C-reactive protein count; and age group may be the cause of heterogeneity for the length of hospital stays.