Follow-up studies with increased stimuli and participants are needed.
1	Follow	follow	NOUN	NN	Number=Sing	4	compound	4:compound	Discourse=joint-list_m:37->26:1|Entity=(62-abstract-new-cf1-4-sgl|SpaceAfter=No|XML=<w>
2	-	-	PUNCT	HYPH	_	3	punct	3:punct	SpaceAfter=No
3	up	up	ADP	RP	_	1	compound:prt	1:compound:prt	XML=</w>
4	studies	study	NOUN	NNS	Number=Plur	11	nsubj:pass	11:nsubj:pass	_
5	with	with	ADP	IN	_	7	case	7:case	_
6	increased	increase	VERB	VBN	Tense=Past|VerbForm=Part	7	amod	7:amod	Entity=(63-abstract-new-cf3-2-sgl
7	stimuli	stimulus	NOUN	NNS	Number=Plur	4	nmod	4:nmod:with	Entity=63)
8	and	and	CCONJ	CC	_	9	cc	9:cc	_
9	participants	participant	NOUN	NNS	Number=Plur	7	conj	4:nmod:with|7:conj:and	Entity=(64-person-new-cf2-1-sgl)62)
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	11:aux:pass	_
11	needed	need	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	SpaceAfter=No
12	.	.	PUNCT	.	_	11	punct	11:punct	_
