title: Comments on: Implications of structural variations in the human sacrum: why is an anatomical classification crucial?
authors.affiliation: Department of Human Anatomy, Faculty of Medicine, Universidad Autónoma de Nuevo León (U.A.N.L.), Ave. Madero y Dr. Eduardo Aguirre Pequeño s/n, Col. Mitras Centro, 64460, Monterrey, Nuevo León, Mexico.
authors.forename: Juan Mario
authors.initials: JM
authors.lastname: García-Coronado
authors.affiliation: Department of Human Anatomy, Faculty of Medicine, Universidad Autónoma de Nuevo León (U.A.N.L.), Ave. Madero y Dr. Eduardo Aguirre Pequeño s/n, Col. Mitras Centro, 64460, Monterrey, Nuevo León, Mexico.
authors.forename: A G
authors.initials: AG
authors.lastname: Espinosa-Uribe
authors.affiliation: Orthopedics and Traumatology Service, University Hospital ''Dr. José Eleuterio González'', Universidad Autónoma de Nuevo León (U.A.N.L.), Monterrey, Nuevo León, Mexico.
authors.forename: F
authors.initials: F
authors.lastname: Vílchez-Cavazos
authors.affiliation: Department of Human Anatomy, Faculty of Medicine, Universidad Autónoma de Nuevo León (U.A.N.L.), Ave. Madero y Dr. Eduardo Aguirre Pequeño s/n, Col. Mitras Centro, 64460, Monterrey, Nuevo León, Mexico.
authors.forename: A
authors.initials: A
authors.lastname: Quiroga-Garza
authors.affiliation: Department of Human Anatomy, Faculty of Medicine, Universidad Autónoma de Nuevo León (U.A.N.L.), Ave. Madero y Dr. Eduardo Aguirre Pequeño s/n, Col. Mitras Centro, 64460, Monterrey, Nuevo León, Mexico. rod_omana@yahoo.com.
authors.forename: R E
authors.initials: RE
authors.lastname: Elizondo-Omaña
authors.affiliation: Department of Human Anatomy, Faculty of Medicine, Universidad Autónoma de Nuevo León (U.A.N.L.), Ave. Madero y Dr. Eduardo Aguirre Pequeño s/n, Col. Mitras Centro, 64460, Monterrey, Nuevo León, Mexico.
authors.forename: S
authors.initials: S
authors.lastname: Guzmán-López
mesh_terms: D006801:Humans; D012445:Sacrococcygeal Region; D012447:Sacrum