title: Reply to the comment on: 'Evaluation of resident's training for endoscopic sinus surgery using a sheep's head'.
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain. beatriz.delgadov9@gmail.com.
authors.forename: Beatriz
authors.identifier: 0000-0003-0556-3956
authors.initials: B
authors.lastname: Delgado-Vargas
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Azucena Lloris
authors.initials: AL
authors.lastname: Romero-Salazar
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Pablo M
authors.initials: PM
authors.lastname: Reyes Burneo
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Catalina
authors.initials: C
authors.lastname: Vásquez Hincapie
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Gonzalo
authors.initials: G
authors.lastname: de Los Santos Granado
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Raúl
authors.initials: R
authors.lastname: Del Castillo López
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Claudio
authors.initials: C
authors.lastname: Frágola Arnau
authors.affiliation: Department of Otolaryngology and Head and Neck Surgery, Hospital Universitario Ramón y Cajal, Madrid, Spain.
authors.forename: Ignacio
authors.initials: I
authors.lastname: Cobeta Marco
mesh_terms: D000818:Animals; D004724:Endoscopy; D006257:Head; D007396:Internship and Residency; D010256:Paranasal Sinuses / Q000601:surgery*; D010820:Physicians; D012756:Sheep