COVID-19-related delays of botulinum toxin injections have a negative impact on the quality of life of patients with dystonia and spasticity: a single-center ambulatory care study Yvonne Teuschl, Christian Bancher, Michael Brainin, Alexandra Dachenhausen, Karl Matz, Michaela M. Pinter Journal of Neural Transmission.2022; 129(1): 49. CrossRef