title: Reply.
authors.affiliation: Oral and Maxillofacial Surgery, Kings College Hospital, Denmark Hill, London, SE59RS, United Kingdom. Electronic address: radhika.dua@nhs.net.
authors.forename: Radhika
authors.initials: R
authors.lastname: Dua
authors.affiliation: Oral and Maxillofacial Surgery, Kings College Hospital, Denmark Hill, London, SE59RS, United Kingdom.
authors.forename: Leandros
authors.initials: L
authors.lastname: Vassiliou
authors.affiliation: Oral and Maxillofacial Surgery, Kings College Hospital, Denmark Hill, London, SE59RS, United Kingdom.
authors.forename: Kathleen
authors.initials: K
authors.lastname: Fan