[Table/Fig-2]:
Articles included in the present retrospective analysis
| S.No | Author | Age Group | Region |
|---|---|---|---|
| 1. | Mittal M et al., 2014 [13] | 5-year-old | Northern India |
| 2. | Sohi RK et al., 2012 [1] | Northern India | |
| 3. | Tewari S 2012 [15] | Northern India | |
| 4. | Sarumathi T et al., 2013 [16] | Southern India | |
| 5. | Singh S 2012et al., [17] | Southern India | |
| 6. | Singh A 2011et al., [7] | Southern India | |
| 7. | Tyagi, R 2008 [18] | Southern India | |
| 8. | Savannah S 2005 [19] | Southern India | |
| 9. | Mahejabeen R et al., 2006 [20] | Southern India | |
| 10. | Mahesh KP et al., 2005 [21] | Southern India | |
| 11. | Angola AV et al., 2005 [22] | Southern India | |
| 12. | Rao VN et al., 2012 [23] | Southern India | |
| 13. | Praveena S et al., 2013 [24] | Southern India | |
| 14. | Shankar S et al., 2012 [25] | Southern India | |
| 15. | Dash JKA et al., 2002 [10] | Eastern India | |
| 16. | Mittal M et al., 2014 [13] | 12-year-old | Northern India |
| 17. | Shailee F et al., 2013 [26] | Northern India | |
| 18. | Bhardwaj et al., 2013 [27] | Northern India | |
| 19. | Garewal H et al., 2011 [11] | Northern India | |
| 20. | Goyala A et al., 2007 [28] | Northern India | |
| 21. | Sohi RK et al., 2012 [1] | Northern India | |
| 22. | Munjal V et al., 2013 [29] | Northern India | |
| 24. | Singh G et al., 2014 [30] | Northern India | |
| 23. | Rai B et al., 2006 [31] | Northern India | |
| 25. | Baskaradossa KJ et al., 2013 [32] | Southern India | |
| 26. | Hebbal M et al., 2012 [33] | Southern India | |
| 27. | Chandra S et al., 2008 [34] | Southern India | |
| 28. | Prashanth ST et al., 2011 [35] | Southern India | |
| 29. | Singh A 2011 [36] | Southern India | |
| 30. | Das UM 2009 [37] | Southern India | |
| 31. | Mahesh KP et al., 2005 [21] | Southern India | |
| 32. | Kulkarni, S 2002 [38] | Southern India | |
| 33. | Praveena S 2013 [24] | Southern India | |
| 34. | Gupta B et al., 2013 [39] | Southern India | |
| 35. | Christian B 2009 [40] | Southern India | |
| 36. | David J et al., 2005 [41] | Southern India | |
| 37. | Retnakumari N et al., 1999[42] | Southern India | |
| 38. | Rao VN et al., 2012 [23] | Southern India | |
| 39. | Ravishankar PL et al., 2013 [43] | Eastern India | |
| 40. | Sharda J et al., 2013 [44] | West India | |
| 41. | Shailee F t al 2013 [26] | 15-year-old | Northern India |
| 42. | Bhardwaj KV et al., 2013 [27] | Northern India | |
| 43. | Goyala A et al., 2007 [28] | Northern India | |
| 44. | Munjal V et al., 2013 [29] | Northern India | |
| 45. | Basuaradossa KJ et al., 2013 [32] | Southern region | |
| 46. | Chandra S et al., 2008 [34] | Southern region | |
| 47. | Kulkarni SS et al., 2012 [38] | Southern region | |
| 48. | Praveena S et al., 2013 [24] | Southern region | |
| 49. | Gupta B et al., 2013 [39] | Southern region | |
| 50. | Dash JK et al., 2002 [10] | Eastern region |