1	Diabetic Foot/ (17388)
2	Foot Ulcer/ (5795)
3	((diabet* adj4 (foot or feet or ulcer*)) or DFU or lower leg wound* or ((unheal* wound* or ulcer*) adj2 (foot or feet))).tw. (22693)
4	or/1–3 (29803)
5	exp Skin Ulcer/ (94496)
6	Foot Diseases/ (18637)
7	exp Leg Injuries/ (189428)
8	Wound Healing/ (170038)
9	(skin ulcer* or varicose ulcer* or leg ulcer* or ((lower extremit* or lower leg*) adj ulcer*) or ((foot or feet) adj disease*) or (leg adj2 (injur* or wound*)) or (wound* adj2 heal*)).tw. (127732)
10	or/5–9 (496866)
11	exp Diabetes Mellitus/ (1041997)
12	exp Diabetes Complications/ (798819)
13	(diabet* or MODY or IDDM or NIDDM).tw. (1158317)
14	or/11–13 (1362645)
15	10 and 14 (35830)
16	4 or 15 (43719)
17	Hyperbaric Oxygenation/ (23748)
18	((hyperbar* adj2 (oxygen* or O2 or chamber or chambers or session or sessions or therap* or treatment*)) or HBOT or HBO or HBO2 or oxygen chamber*).tw. (22670)
19	or/17–18 (31048)
20	16 and 19 (1114)
21	20 use pmoz,cctr,coch,dare,clhta,cleed (480)
22	limit 21 to english language [Limit not valid in CDSR,DARE; records were retained] (425)
23	diabetic foot/ (17388)
24	foot ulcer/ (5795)
25	((diabet* adj4 (foot or feet or ulcer*)) or DFU or lower leg wound* or ((unheal* wound* or ulcer*) adj2 (foot or feet))).tw. (22693)
26	or/23–25 (29803)
27	exp skin ulcer/ (94496)
28	foot disease/ (21170)
29	exp leg injury/ (189198)
30	wound healing/ (170038)
31	ulcer healing/ (6490)
32	(skin ulcer* or varicose ulcer* or leg ulcer* or ((lower extremit* or lower leg*) adj ulcer*) or ((foot or feet) adj disease*) or (leg adj2 (injur* or wound*)) or (wound* adj2 heal*)).tw. (127732)
33	or/27–32 (502663)
34	exp diabetes mellitus/ (1041997)
35	(diabet* or MODY or IDDM or NIDDM).tw. (1158317)
36	or/34–35 (1362645)
37	33 and 36 (36072)
38	26 or 37 (43905)
39	hyperbaric oxygen/ (14305)
40	((hyperbar* adj2 (oxygen* or O2 or chamber or chambers or session or sessions or therap* or treatment*)) or HBOT or HBO or HBO2 or oxygen chamber*).tw. (22670)
41	or/39–40 (28054)
42	38 and 41 (1104)
43	42 use emez (677)
44	limit 43 to english language [Limit not valid in CDSR,DARE; records were retained] (603)
45	22 or 44 (1028)
46	45 use pmoz (348)
47	45 use emez (603)
48	45 use cctr (32)
49	45 use coch (18)
50	45 use dare (14)
51	45 use clhta (9)
52	45 use cleed (4)
53	remove duplicates from 45 (706)