40. A Prospective Pilot Study Comparing Functional Outcomes Between Headache Surgery And Targeted Botox Injections oleh Jeffrey E. Janis, MD, Jason Hehr, MD, Maria T. Huayllani, MD, Ibrahim Khansa, MD, Lisa Gfrerer, MD, PhD, Kaitlin Kavanagh, MD, Pamela Blake, MD, Yevgeniya Gokun, MS, William G. Austin, Jr., MD