title: In regard to Habr-Gama et al.
authors: Service of Radiation Oncology, Instituto de Radiomedicina, Santiago, Chile.
authors: Claudio V
authors: CV
authors: Sole
authors: Department of Oncology, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
authors: Felipe A
authors: FA
authors: Calvo
mesh_terms: D059186:Chemoradiotherapy, Adjuvant; D005260:Female; D006801:Humans; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000628:therapy*; D012004:Rectal Neoplasms / Q000628:therapy*; D016879:Salvage Therapy / Q000379:methods*; D057832:Watchful Waiting