Comparative Study of Valved and Nonvalved Fully Implantable Catheters Inserted Via Ultrasound-Guided Puncture for Chemotherapy - Bomfim, Guilherme A. Zottele; Wolosker, Nelson; Yazbek, Guilherme; Bernardi, Christiano V.; Valentim, Luisa A.; De Castro, Thiago M.; Pignataro, Bruno S.; Benitti, Daniel A.; Nishinari, Kenji (Annals of Vascular Surgery, 2014)