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
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
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
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
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