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Table 1 MEDLINE search strategy

From: The impact of environmental cadmium exposure on type 2 diabetes risk: a protocol for an overview of systematic reviews

#

Searches

1

Cadmium/

2

exp cadmium compounds/

3

Cadmium poisoning/

4

cadmium.mp.

5

or/1–4

6

exp diabetes mellitus, type 2/

7

((Type 2 or type II or non-insulin or non-insulin or adult onset or matur* onset) adj3 diabet*).mp.

8

T2DM.mp.

9

T2D.mp.

10

NIDDM.mp.

11

6 or 7 or 8 or 9 or 10

12

Overnutrition/or obesity/or obesity, abdominal/or obesity, morbid/or pediatric obesity/

13

obes*.mp.

14

Overweight/

15

(Overweight or overweight or excess* weight).mp.

16

Overnutrition.mp.

17

(Weight adj2 (gain* or increase* or excess*)).mp.

18

BMI.mp.

19

Body mass index/or skinfold thickness/or waist-hip ratio/

20

Body mass index.mp.

21

Waist circumference*.mp.

22

Waist to hip ratio*.mp.

23

Waist hip ratio*.mp.

24

Waist to height.mp.

25

Waist height.mp.

26

Skinfold thickness/

27

Skinfold*.mp.

28

Insulin resistance/ or metabolic syndrome/

29

(Insulin adj2 (resistan* or sensitiv*)).mp.

30

Metabolic syndrom*.mp.

31

Exp lipid Metabolism/

32

Lipid*.mp.

33

(Lipogenesis or lypolysis or lipoylation).mp.

34

Exp glucose/

35

glucose.mp.

36

Insulin/

37

Hypertension/

38

Hypertens*.mp.

39

or/12–37

40

11 or 39

41

5 and 40

42

Remove duplicates from 41

43

5 and 11

44

Systematic review*.mp.

45

Meta-Analysis as topic/or “review literature as topic”/

46

Meta-analys*.mp.

47

or/44–46

48

43 and 47