Efficacy and safety of onabotulinumtoxinA therapy are sustained over 4 years of treatment in patients with neurogenic detrusor overactivity: Final results of a long-term extension study.
Kennelly M, Dmochowski R, Schulte-Baukloh H, Ethans K, Del Popolo G, Moore C, Jenkins B, Guard S, Zheng Y, Karsenty G, et al.
Neurourol Urodyn. 2015 Nov 24. PMID: 26607743.Abstract