Search set	CIDG SRa	CENTRAL	MEDLINEb	EMBASEb	LILACSb
1	Diarrhea*	DIARRHEA	DIARRHEA	INFECTIOUS DIARRHEA	Diarrhea$
2	Diarrhoea*	Diarrhoea*	Diarrhoea*	Diarrhoea*	Diarrhoea$
3	1 or 2	1 or 2	1 or 2	1 or 2	1 or 2
4	Probiotic*	Probiotic*	PROBIOTICS	PROBIOTIC AGENT	Probiotic$
5	Lactobacill*	Lactobacill*	Lactobacill*	Lactobacill$	Lactobacill$
6	Lactococc*	Lactococc*	Lactococc*	Lactococc$	Lactococc$
7	Bifidobacter*	Bifidobacter*	Bifidobacter*	Bifidobacter$	Bifidobacter$
8	Enterococc*	Enterococc*	Enterococc*	Enterococc$	Enterococc$
9	Streptococc*	Streptococc*	Streptococc*	Streptococc$	Streptococc$
10	saccharomyces	saccharomyces	saccharomyces	saccharomyces	saccharomyces
11	4 or 5 or 6 or 7 or 8 or 9 or 10	4 or 5 or 6 or 7 or 8 or 9 or 10	4 or 5 or 6 or 7 or 8 or 9 or 10	4 or 5 or 6 or 7 or 8 or 9 or 10	4 or 5 or 6 or 7 or 8 or 9 or 10
12	3 and 11	3 and 11	3 and 11	3 and 11	3 and 11
13			Limit 12 to Humans	Limit 12 to Human