Berthin, C., & Maillard, H. (2019). Duration of Efficacy Increases with the Repetition of Botulinum Toxin A Injections in Primary Axillary Hyperhidrosis: A 15-year Study in 117 Patients. Acta Dermato-Venereologica, 99(13), 1237–1240. https://doi.org/10.2340/00015555-3307