Prevalence of Invasive Streptococcus pneumoniae Infections among Iranian Children: A Systematic Review and Meta-Analysis - Yousefi Avarvand, Arshid; Halaji, Mehrdad; Zare, Donya; Hasannejad-Bibalan, Meysam; Sedigh Ebrahim-Saraie, Hadi (Iranian Journal of Public Health, 2021)