{Reference Type}: Letter {Title}: In Reply: The Zap-X Radiosurgical System in the Treatment of Intracranial Tumors: A Technical Case Report. {Author}: Adler JR;Weidlich G; {Journal}: Neurosurgery {Volume}: 88 {Issue}: 6 {Year}: 05 2021 13 {Factor}: 5.315 {DOI}: 10.1093/neuros/nyab081 {Abstract}: