Transesophageal Endoscopic Ultrasound-Guided Fine-Needle Aspiration (EUS-FNA) and Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration (EBUS-TBNA) Biopsy: a Combined Approach in the Evaluation of Mediastinal Lesions - Vilmann, P; Krasnik, M; Larsen, S S; Jacobsen, G K; Clementsen, P (Endoscopy, 2005)