No.	Search terms	Results
1	ethic* consult*.ti.	589
2	(moral adj1 (review? or case deliberation? or consult*)).ti,ab.	57
3	((bioethic* or ethic*) adj2 (case review? or deliberation? or intervention? or round? or service? or consult* or decision?)).ti,ab.	4663
4	(ethicist? or bioethicist?).ti,ab.	2457
5	clinical ethic* committee?.ti,ab.	192
6	or/2‐5	7087
7	randomized controlled trial/	513,277
8	controlled clinical trial/	457,954
9	quasi experimental study/	4885
10	pretest posttest control group design/	351
11	time series analysis/	21,229
12	experimental design/	15,800
13	multicenter study/	193,887
14	(randomis* or randomiz* or randomly).ti,ab.	1,090,040
15	groups.ab.	2,493,698
16	(trial or multicentre or multicenter or multi centre or multi center).ti.	304,055
17	(intervention? or effect? or impact? or controlled or control group? or (before adj5 after) or (pre adj5 post) or ((pretest or pre test) and (posttest or post test)) or quasiexperiment* or quasi experiment* or pseudo experiment* or pseudoexperiment* or evaluat* or time series or time point? or repeated measur*).ti,ab.	10,793,209
18	or/7‐17	12,050,957
19	(systematic review or literature review).ti.	138,898
20	"cochrane database of systematic reviews".jn.	12,661
21	exp animals/ or exp invertebrate/ or animal experiment/ or animal model/ or animal tissue/ or animal cell/ or nonhuman/	24,799,391
22	human/ or normal human/ or human cell/	18,851,847
23	21 not (21 and 22)	5,997,763
24	19 or 20 or 23	6,148,023
25	18 not 24	9,235,326
26	1 or (6 and 25)	2904