1. Wearing Off Effect of OnabotulinumtoxinA Near the End of Treatment Cycle for Chronic Migraine: A 4‐Year Clinical Experience. Issue 2 (22nd November 2019) Authors: Khan, Fawad A.; Mohammed, Alaa E.; Poongkunran, Mugilan; Chimakurthy, Anilkumar; Pepper, Michael Journal: Headache Issue: Volume 60:Issue 2(2020) Page Start: 430 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗