Risk of asymptomatic pulmonary embolism in patients with deep venous thrombosis - Krutman, Mariana; Wolosker, Nelson; Kuzniec, Sérgio; Guerra, João Carlos de Campos; Tachibana, Adriano; Mendes, Cynthia de Almeida (Journal of Vascular Surgery: Venous and Lymphatic Disorders, 2013)