Additional reference sources

https://www.mdsabstracts.org/keyword-index/
https://www.mdsabstracts.org  
https://www.frontiersin.org/research-topics/12013/multidisciplinary-approach-to-uncovering-the-pathophysiology-of-tourette-syndrome#overview
https://tourette.org/research-medical/2020-virtual-conference-poster-presentations/
https://link.springer.com/journal/40474/topicalCollection/AC_201b22404b6bf194b90bbc19462a5d9f