1. http://www.atsjournals.org/doi/full/10.1164/ajrccm.164.12.2103052#.U1r2Al40_wI

2. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1867542/

3. none

4. https://ghr.nlm.nih.gov/condition/spinal-muscular-atrophy

5. http://www.ncbi.nlm.nih.gov/pubmed/23437783

6. http://www.webmd.com/baby/what-is-trisomy-18#1

7. http://emedicine.medscape.com/article/947706-overview

8. http://emedicine.medscape.com/article/949681-overview

9. http://emedicine.medscape.com/article/949681-clinical#a0217

10. http://emedicine.medscape.com/article/945649-overview

11. http://www.webmd.com/children/features/is-your-baby-on-track

12. http://www.nlm.nih.gov/medlineplus/ency/article/002010.htm

13. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2688998/

14. http://www.merriam-webster.com/medical/phocomelia

15. http://www.merckmanuals.com/professional/pediatrics/congenital-craniofacial-and-musculoskeletal-abnormalities/common-congenital-limb-defects

16. http://www.oandplibrary.org/alp/chap34-04.asp

17. http://www.ncbi.nlm.nih.gov/pubmed/1670433

18. http://www.ncbi.nlm.nih.gov/pubmed/21776551

19. none

20. https://medlineplus.gov/ency/article/001584.htm

21. http://emedicine.medscape.com/article/1248135-treatment

22. http://www.ncbi.nlm.nih.gov/pubmed/17065952

23. https://www.orthobullets.com/pediatrics/4012/nursemaids-elbow

24. http://www.orthobullets.com/sports/3030/sinding-larsen-johansson-syndrome

25. http://emedicine.medscape.com/article/1007186-overview

26. https://www.mayoclinic.org/diseases-conditions/legg-calve-perthes-disease/basics/definition/CON-20035572

27. http://emedicine.medscape.com/article/91596-treatment

28. http://emedicine.medscape.com/article/1260442-overview#a5

29. http://radiopaedia.org/articles/cobb-angle

30. http://radiopaedia.org/articles/cobb-angle

31. http://www.orthobullets.com/spine/2053/adolescent-idiopathic-scoliosis

32. http://www.orthobullets.com/spine/2053/adolescent-idiopathic-scoliosis

33. http://www.hss.edu/conditions_spondylolysis-pars-fracture-spine.asp#.U8WO_6gqZsk

34. http://pediatrics.aappublications.org/content/117/5/1843.full

35. none

36. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3805878/

37. http://reference.medscape.com/calculator/jones-criteria-diagnosis-rheumatic

38. http://emedicine.medscape.com/article/779322-treatment#aw2aab6b6b4

39. http://www.cancer.org/cancer/cancerinchildren/detailedguide/cancer-in-children-types-of-childhood-cancers

40. http://radiopaedia.org/articles/ewing-sarcoma

41. https://www.mayoclinic.org/diseases-conditions/osteosarcoma/symptoms-causes/syc-20351052

42. http://emedicine.medscape.com/article/1179555-overview#aw2aab6b2b5aa

43. http://www.cdc.gov/ncbddd/cp/facts.html

44. https://cparf.org/what-is-cerebral-palsy/types-of-cerebral-palsy/dyskinetic-cerebral-palsy-dyskinesia/

45. http://emedicine.medscape.com/article/1179555-overview#aw2aab6b2b5aa

46. http://pediatrics.aappublications.org/content/114/5/1264.abstract

47. http://www.cerebralpalsy.org/information/cognition

48. none

49. none

50. none

51. http://emedicine.medscape.com/article/311113-overview

52. none

53. http://www.orthobullets.com/pediatrics/4117/obstetric-brachial-plexopathy-erbs-klumpkes-palsy

54. http://www.orthobullets.com/pediatrics/4117/obstetric-brachial-plexopathy-erbs-klumpkes-palsy

55. http://www.orthobullets.com/pediatrics/4117/obstetric-brachial-plexopathy-erbs-klumpkes-palsy

56. http://www.ncbi.nlm.nih.gov/pubmed/8241792

57. http://www.ncbi.nlm.nih.gov/pubmed/2753240