title: Reply to letter to the editor.
authors.affiliation: Paediatric Surgery, Kings College Hospital, London, United Kingdom.
authors.forename: Erica
authors.initials: E
authors.lastname: Makin
authors.affiliation: Paediatric Surgery, Kings College Hospital, London, United Kingdom.
authors.forename: Natalie
authors.initials: N
authors.lastname: Durkin
authors.affiliation: FRCR Paediatric Radiology, Kings College Hospital, London, United Kingdom.
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Deganello
authors.affiliation: FRCR Paediatric Radiology, Kings College Hospital, London, United Kingdom.
authors.forename: Maria
authors.initials: M
authors.lastname: Sellars
authors.affiliation: FRCR Paediatric Radiology, Kings College Hospital, London, United Kingdom.
authors.forename: Paul S
authors.initials: PS
authors.lastname: Sidhu
authors.affiliation: Paediatric Surgery, Kings College Hospital, London, United Kingdom. Electronic address: markdav2@ntlworld.com.
authors.forename: Mark
authors.initials: M
authors.lastname: Davenport