https://www.ncbi.nlm.nih.gov/pubmed/27643908
http://www.pedneur.com/article/S0887-8994(15)30139-9/fulltext
https://www.sciencedirect.com/science/article/pii/B9780444634320000177?via%3Dihub
https://www.sciencedirect.com/science/article/pii/B978044463432000027X?via%3Dihub
https://link.springer.com/article/10.1007%2Fs00415-016-8277-y
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4772911/
https://www.sciencedirect.com/science/article/pii/S156899721630163X
https://www.ncbi.nlm.nih.gov/pubmed/26896820
https://www.ncbi.nlm.nih.gov/pubmed/27037228
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4959944/