title: Letter to the editor.
authors.forename: Teresa F
authors.initials: TF
authors.lastname: Amaral
authors.forename: Joana
authors.initials: J
authors.lastname: Mendes
mesh_terms: D005260:Female; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D044342:Malnutrition / Q000175:diagnosis* / Q000453:epidemiology*; D057234:Preoperative Period