title: Authors' reply to Tavabie.
authors.affiliation: Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
authors.forename: Chris
authors.initials: C
authors.lastname: Day
authors.affiliation: National Guideline Centre, Royal College of Physicians, London NW1 4LE, UK.
authors.forename: Jessica
authors.initials: J
authors.lastname: Glen
authors.affiliation: National Guideline Centre, Royal College of Physicians, London NW1 4LE, UK.
authors.forename: Lefteris
authors.initials: L
authors.lastname: Floros
authors.affiliation: Winyates Health Centre, Redditch B98 0NR, UK.
authors.forename: Rachel
authors.initials: R
authors.lastname: Pryke