Table 1.

Search strategies for systematic review

1.	“Cesarean Sections” [MeSH] OR “Delivery, Abdominal” [MeSH] OR “Abdominal Deliveries” [MeSH] OR “Deliveries, Abdominal” [MeSH] OR “Caesarean Section” [MeSH] OR “Caesarean Sections” [MeSH] OR “Abdominal Delivery” [MeSH] OR “C-section (OB)” [MeSH] OR “C Section (OB)” [MeSH] OR “C-sections (OB)” [MeSH]
2.	“Gastrointestinal Microbiomes” [MeSH] OR “Microbiome, Gastrointestinal” [MeSH] OR “Gut Microbiome” [MeSH] OR “Gut Microbiomes” [MeSH] OR “Microbiome, Gut” [MeSH] OR “Gut Microflora” [MeSH] “Gut Microbiota” [MeSH] OR “Gut Microbiotas” [MeSH] OR “Microbiota, Gut” [MeSH] OR “Gastrointestinal Flora” [MeSH] OR “Flora, Gastrointestinal” [MeSH] OR “Gut Flora” [MeSH] OR “Flora, Gut” [MeSH] OR “Gastrointestinal Microbiota” [MeSH] OR “Gastrointestinal Microbiotas” [MeSH] OR “Microbiota, Gastrointestinal” [MeSH] OR “Gastrointestinal Microbial Community” [MeSH] OR “Gastrointestinal Microbial Communities” [MeSH] OR “Microbial Community, Gastrointestinal” [MeSH] OR “Gastrointestinal Microflora” [MeSH] OR “Microflora, Gastrointestinal” [MeSH] OR “Gastric Microbiome” [MeSH] OR “Gastric Microbiomes” [MeSH] OR “Microbiome, Gastric” [MeSH] OR “Intestinal Microbiome” [MeSH] OR “Intestinal Microbiomes” [MeSH] OR “Microbiome, Intestinal” [MeSH] OR “Intestinal Microbiota” [MeSH] OR “Intestinal Microbiotas” [MeSH] OR “Microbiota, Intestinal” [MeSH] OR “Intestinal Flora” [MeSH] OR “Flora, Intestinal” [MeSH] OR “Enteric Bacteria” [MeSH] OR “Bacteria, Enteric” [MeSH]
3.	“Infant” [MeSH] OR “Infants” [MeSH] OR “Newborn” [MeSH]
4.	#1 AND #2 AND #3