Table 1.

Detailed Search Strategy

Database	Reference Type	Search Fields	No. of Returned Articles
PubMed	All References	Title/abstract	443
Embase	All References	Title/Abstract/Key words	114
Web of Science	All References	Topic	385
ScienceDirect	All References	TITLE-ABSTR-KEY	115
Scopus	All References	TITLE-ABS-KEY	1047
IEEE Xplore	All References	MetaData and FullText	397