“…Figure 6 shows the 16 countries in which the studies included in this review were conducted. The selected articles' geographical distribution in terms of numbers and percentages shows that the most prolific contributors were from India 59 , 63 , 65 , 73 , 75 , 76 , 79 , 80 , 82 , 83 , 88 , 93 with 12 studies; China 56 , 58 , 72 , 74 , 86 , 90 , 96 with seven studies; Turkey, 51 , 60 , 71 , 91 , 92 Pakistan, 54 , 57 , 67 , 78 , 85 and Malaysia 10 , 37 , 52 , 68 , 89 with five studies each; Saudi Arabia 69 , 77 , 94 with three studies; Iraq, 61 , 66 Egypt, 44 , 62 Iran, 50 , 81 and Italy 70 , 87 with two studies each; and Serbia, 49 Philippines, 53 Brazil, 55 ...…”