Table 1.

PubMed database strategy search

Number	Search strategy
#1	(((((((((((("Social Media”[Mesh]) OR ("Social Networking”[Mesh])) OR ("social media*"[Title/Abstract])) OR ("Social network*"[Title/Abstract])) OR ("social medium”[Title/Abstract])) OR ("social network site*"[Title/Abstract])) OR ("social networking site*"[Title/Abstract])) OR ("Online social network*"[Title/Abstract])) OR (Online social site*[Title/Abstract])) OR ("online communit*"[Title/Abstract])) OR ("virtual communit*"[Title/Abstract])) OR ("online forum*"[Title/Abstract])) OR (SNA[Title/Abstract])
#2	((((((("Neoplasms”[Mesh]) OR ("cancer*"[Title/Abstract])) OR ("tumour*"[Title/Abstract])) OR ("tumour*"[Title/Abstract])) OR ("neoplas*"[Title/Abstract])) OR ("carcinoma*"[Title/Abstract])) OR ("malignan*"[Title/Abstract])
#3	"Education”(MeSH Terms) OR "education*"[Title/Abstract]OR "train*"[Title/Abstract]OR "teach*"[Title/Abstract]OR "learn*"[Title/Abstract]OR "Communication”(MeSH Terms) OR "communicat*"[Title/Abstract]OR "electronic communication*"[Title/Abstract]
#4	#1 AND #2 AND #3