title: Carta al editor.
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México. Electronic address: consultorio1080@prodigy.net.mx.
authors.forename: Luis
authors.initials: L
authors.lastname: Hernández-Miguelena
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México.
authors.forename: Angélica
authors.initials: A
authors.lastname: Maldonado-Vázquez
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México.
authors.forename: Pablo
authors.initials: P
authors.lastname: Cortés-Romano
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México.
authors.forename: Daniel
authors.initials: D
authors.lastname: Rios-Cruz
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México.
authors.forename: Raúl
authors.initials: R
authors.lastname: Marín-Domínguez
authors.affiliation: Clínica de Obesidad, Hospital Ángeles del Pedregal y Hospital San Ángel Inn, México Distrito Federal, México.
authors.forename: Armando
authors.initials: A
authors.lastname: Castillo-González
mesh_terms: D005260:Female; D015390:Gastric Bypass / Q000379:methods*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male