Baseline T Classification Predicts Early Tumor Regrowth After Nonoperative Management in Distal Rectal Cancer After Extended Neoadjuvant Chemoradiation and Initial Complete Clinical Response - Habr-Gama, Angelita; São Julião, Guilherme Pagin; Gama-Rodrigues, Joaquim; Vailati, Bruna Borba; Ortega, Cinthia M. D.; Fernandez, Laura Melina; Araújo, Sérgio Eduardo Alonso; Perez, Rodrigo Oliva (Diseases of the Colon & Rectum, 2017)