Fig. 1From: The correlation between vitamin a status and refractory Mycoplasma Pneumoniae pneumonia (RMPP) incidence in childrenFlow diagram of the participants. As shown, a total of 291 cases met the inclusion criteria, after exclusion, 181 MPP patients were enrolled according to the inclusion and exclusion criteria, and then divided into RMPP group (n = 29) and GMPP group (n = 152). The vitamin A concentrations and other characteristics of each group were then determinedBack to article page