Yazbek G, Wolosker N, Kauffman P, Campos JRM de, Puech-Leão P, Jatene FB. Twenty months of evolution following sympathectomy on patients with palmar hyperhidrosis: sympathectomy at the T3 level is better than at the T2 level . Clinics. 2009;64(8):743-749. doi:10.1590/S1807-59322009000800006