Clinical, ultrasonographic and histological findings in varicose vein surgery - Porciunculla, Moacir de Mello; Leiderman, Dafne Braga Diamante; Altenfeder, Rodrigo; Pereira, Celina Siqueira Barbosa; Fioranellil, Alexandre; Wolosker, Nelson; Castelli Junior, Valter (Revista da associacao medica brasileira, 2018)