Figure 2

Forrest plot with meta-analysis of the risk of (a) Respiratory tract infection, and (b) serious Respiratory tract infection. RR indicates risk ratio. The size of data markers indicates the weight of each trial.
Forrest plot with meta-analysis of the risk of (a) Respiratory tract infection, and (b) serious Respiratory tract infection. RR indicates risk ratio. The size of data markers indicates the weight of each trial.