2. http://www.aafp.org/afp/2011/0315/p697.html
3. http://www.aafp.org/afp/2011/0315/p697.html
4. http://www.aafp.org/afp/2011/0315/p697.html
5. http://mda.org/disease/friedreichs-ataxia/signs-and-symptoms
6. none
7. http://www.merriam-webster.com/dictionary/chorea
8. http://www.merriam-webster.com/medical/athetosis
9. http://www.ncbi.nlm.nih.gov/pubmed/14572734
11. https://www.healthline.com/health/dysdiadochokinesia
12. http://www.aafp.org/afp/2011/0315/p697.html
http://onlinelibrary.wiley.com/doi/10.1113/expphysiol.1994.sp003763/pdf
13. http://www.aafp.org/afp/2011/0315/p697.html
14. none
15. http://www.ncbi.nlm.nih.gov/pubmed/19250855
17. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2730785/
18. http://emedicine.medscape.com/article/1150165-overview#a0104