Choi, Jin Bong, et al. “Treatment Satisfaction With Flexible-Dose Fesoterodine in Patients With Overactive Bladder Who Were Dissatisfied With Previous Anticholinergic Therapy: A Multicenter Single-Arm Clinical Study”. Urology Journal, vol. 17, no. 1, Jan. 2020, pp. 97-101, doi:10.22037/uj.v17i1.4650.