# ▲	Searches
1	randomised controlled trial.pt.
2	randomized controlled trial.pt.
3	controlled clinical trial.pt.
4	randomized.ab.
5	randomised.ab.
6	placebo.ab.
7	randomly.ab.
8	trial.ab.
9	groups.ab.
10	1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9
11	exp Breast Neoplasms/
12	(milk or tender* or lactat* or feeding or fed).ti,ab.
13	exp Milk, Human/
14	exp Breast Feeding/
15	exp Lactation/
16	12 or 13 or 14 or 15
17	11 not 16
18	exp Follow‐Up Studies/
19	(follow‐up or follow‐up care or follow‐up stud* or centralised follow‐up or decentralised follow‐up or postoperative surveillance or routine).ti,ab.
20	18 and 19
21	10 and 17 and 20
22	limit 21 to humans