1	randomized controlled trial.pt.
2	controlled clinical trial.pt.
3	randomized.ab.
4	placebo.ab.
5	clinical trials as topic.sh.
6	randomly.ab.
7	trial.ab.
8	groups.ab.
9	1 or 2 or 3 or 4 or 5 or 6 or 7 or 8
10	exp Breast Neoplasms/
11	(breast adj6 cancer$).mp.
12	(breast adj6 neoplasm$).mp.
13	(breast adj6 carcinoma$).mp.
14	(breast adj6 tumour$).mp.
15	(breast adj6 tumor$).mp.
16	10 or 11 or 12 or 13 or 14 or 15
17	exp Lymphedema/
18	lymphedema.mp. OR upper‐limb lymphedema.mp
19	lymphoedema.mp. OR upper‐limb lymphoedema.mp
20	breast cancer associated lymphoedema.mp.
21	breast cancer associated lymphedema.mp.
22	(breast cancer adj6 (lymphoedema or lymphedema)).mp.
23	17 or 18 or 19 or 20 or 21 or 22
24	exp Lipectomy/
25	liposuction.mp.
26	lymph node transfer.mp.
27	(lymph node adj5 transfer).mp.
28	exp Anastomosis, Surgical/
29	(lymphaticovenular anastomosis OR lymphaticovenous anastomosis).mp
30	(LVA OR LYMPHA).mp
31	(Lympathico‐lymphatic bypass OR axillary clearance OR axillary dissection OR axillary lymphadenectomy OR lymph node flap).mp
32	(Lympathico‐lymphatic adj5 bypass).mp.
33	microsurgical lymphatic reconstruction.mp.
34	(lymphatic adj5 reconstruction).mp.
35	(microsurgical adj5 lymphatic reconstruction).mp.
36	(microsurgical adj5 lymphatic).mp.
37	(Anastamotic reconstruction or Anastomotic reconstruction).mp.
38	(surg* prevent* adj5 (lymphoedema or lymphedema)).mp.
39	(surg* treat* adj5 (lymphoedema or lymphedema)).mp.
40	24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35 or 36 or 37 or 38 or 39
41	9 and 16 and 23 and 40
42	Animals/ not Humans/
43	41 not 42