No.	Search terms	Results
1	*ethics consultation/	774
2	ethic* consult*.ti.	573
3	or/1‐2	955
4	ethics consultation/	1090
5	ethicists/	1902
6	ethics committees, clinical/	2235
7	ethics, clinical/	3097
8	bioethics/	7333
9	bioethical issues/	4884
10	ethical review/	1808
11	"referral and consultation"/es	387
12	(moral adj1 (review? or case deliberation? or consult*)).ti,ab.	54
13	((bioethic* or ethic*) adj2 (case review? or deliberation? or intervention? or round? or service? or consult* or decision?)).ti,ab.	3921
14	(ethicist? or bioethicist?).ti,ab.	2371
15	clinical ethic* committee?.ti,ab.	146
16	or/4‐15	22,545
17	randomized controlled trial.pt.	468,657
18	controlled clinical trial.pt.	92,657
19	multicenter study.pt.	239,419
20	pragmatic clinical trial.pt.	875
21	(randomis* or randomiz* or randomly).ti,ab.	791,179
22	groups.ab.	1,836,346
23	(trial or multicenter or multi center or multicentre or multi centre).ti.	222,282
24	(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.	8,626,386
25	non‐randomized controlled trials as topic/	404
26	interrupted time series analysis/	475
27	controlled before‐after studies/	353
28	or/17‐27	9,626,077
29	exp animals/	21,792,430
30	humans/	17,294,501
31	29 not (29 and 30)	4,497,929
32	review.pt.	2,431,758
33	meta analysis.pt.	92,479
34	news.pt.	191,592
35	comment.pt.	733,489
36	editorial.pt.	468,900
37	cochrane database of systematic reviews.jn.	13,841
38	comment on.cm.	733,484
39	(systematic review or literature review).ti.	118,393
40	or/31‐39	8,015,830
41	28 not 40	6,746,569
42	3 or (16 and 41)	3884