Long-term results of the treatment of primary hyperhidrosis with oxybutynin: follow-up of 1,658 cases - Wolosker, Nelson; Kauffman, Paulo; Campos, Jose R. M. de; Faustino, Carolina B; Silva, Marcelo F. A. da; Teivelis, Marcelo P; Leao, Pedro Puech (International journal of dermatology, 2020)