Acknowledgments
The authors would like to thank the patients and families involved for providing information needed for this report. We would also like to thank Scott Bonczek, Nidal Kifaieh, Louie Mar Gangcuangco, Jignesh Modi, Anne Williamson, and the staff of the Chase Family Movement Disorders Center for their assistance in identifying patients and providing additional data for this study.

Author Contributions
Conceptualization: J.A.d.M.; methodology, J.A.d.M. and J.L.; investigation, J.A.d.M., J.L., D.M., L.B., M.D., M.M.-d.C., E.B. and S.K.; writing—original draft preparation J.A.d.M. and J.L.; writing—review and editing; J.L., D.M., L.B., M.D., M.M.-d.C., E.B., S.K., and M.A.; supervision J.A.d.M. and M.A.; and project administration J.A.d.M. All authors have read and agreed to the published version of the manuscript.

Funding
This research received no external funding.

Conflicts of Interest
The authors declare no conflict of interest.