title: Reply.
authors.affiliation: Royal Free Hospital and University College London, London, UK.|Université de Lille, Centre National de Référence de la Sclérodermie Systémique, Hôpital Claude Huriez, EA2686 (INSERM U995 LIRIC) and Fédération Hospitalo-Universitaire, IMmune-Mediated INflammatory diseases aNd Targeted Therapies (IMMINeNT), Lille, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Sobanski
authors.affiliation: Université de Lille and Fédération Hospitalo-Universitaire, IMmune-Mediated INflammatory diseases aNd Targeted Therapies (IMMINeNT), Centre Hospitalier Régional Universitaire de Lille, Lille, France.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Giovannelli
authors.affiliation: Royal Free Hospital and University College London, London, UK.
authors.forename: Christopher P
authors.initials: CP
authors.lastname: Denton
authors.affiliation: Royal Free Hospital and University College London, London, UK.
authors.forename: John G
authors.initials: JG
authors.lastname: Coghlan