Twenty months of evolution following sympathectomy on patients with palmar hyperhidrosis: sympathectomy atthe T3 level is better than at the T2 level - Yazbek, Guilherme; Wolosker, Nelson; Kauffman, Paulo; Campos, José Ribas Milanez de; Puech Leão, Pedro; Jatene, Fábio Biscegli (Clinics, 2009)