1	exp mental health/
2	exp mental health care/
3	exp psychiatry/
4	exp psychiatric treatment/
5	exp drug dependence treatment/
6	mental health center/ or community mental health center/
7	exp mental disease/
8	mental patient/
9	((mental* or psychiatric) adj (ill* or disorder* or disease* or health* or patient* or treatment or hospital*)).tw.
10	((chronic* or severe*) adj (mental* or psychiatric)).tw.
11	or/1‐10
12	consumer/
13	consumer advocacy/
14	patient advocacy/
15	peer group/
16	((involv* or inclusion or participati* or collaborati*) adj2 (patient* or inpatient* or outpatient* or client* or user* or service user* or consumer* or mental health consumer* or survivor* or people* or people with mental illness)).tw.
17	assertive community treatment.tw.
18	or/12‐17
19	(provide* or staff* or employ* or personnel or case manag* or (service* adj4 deliver*) or collaborator* or aide or aides or specialist* or consultant*).tw.
20	exp employment/
21	health care personnel/ or mental health care personnel/
22	or/19‐21
23	18 and 22
24	((patient* or inpatient* or outpatient* or client* or user* or service user* or consumer* or mental health consumer* or survivor* or people* or people with mental illness) adj2 (provide* or service provider* or staff* or employ* or personnel or team* or case manag* or service delivery or collaborat* or aide or aides or specialist* or consultant* or delivered or operated or assisted or led or managed or conducted or directed or run)).tw.
25	(peer adj (provider* or service* or staff or specialist* or support or companion* or organi#ed or based or run or delivered or led or managed or conducted or directed)).tw.
26	or/23‐25
27	11 and 26
28	randomized controlled trial/
29	random*.tw.
30	placebo*.tw.
31	((singl* or doubl* or tripl* or trebl*) and (blind* or mask*)).tw.
32	single blind procedure/ or double blind procedure/
33	(crossover* or cross over*).tw.
34	crossover procedure/
35	factorial*.tw.
36	(assign* or allocat* or volunteer*).tw.
37	or/28‐36
38	nonhuman/
39	37 not 38
40	27 and 39