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Correction: Factor structure and convergent validity of the Derriford Appearance Scale-24 using standard scoring versus treating ‘not applicable’ responses as missing data: a Scleroderma Patient-centered Intervention Network (SPIN) cohort study

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Merz EL, Kwakkenbos L, Carrier M on behalf of the SPIN Investigators, et al. Factor structure and convergent validity of the Derriford Appearance Scale-24 using standard scoring versus treating ‘not applicable’ responses as missing data: a Scleroderma Patient-centered Intervention Network (SPIN) cohort study. BMJ Open 2018;8:e018641. doi:10.1136/bmjopen-2017-018641

In the Collaborator list, the name ‘Ilham Benzida’ should have been spelt ‘Ilham Benzidia’.

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    Erin L Merz Linda Kwakkenbos Marie-Eve Carrier Shadi Gholizadeh Sarah D Mills Rina S Fox Lisa R Jewett Heidi Williamson Diana Harcourt Shervin Assassi Daniel E Furst Karen Gottesman Maureen D Mayes Tim P Moss Brett D Thombs Vanessa L Malcarne on behalf of the SPIN Investigators Murray Baron Susan J Bartlett Frank Van Den Hoogen Luc Mouthon Warren R Nielson Robert Riggs Maureen Sauve Fredrick Wigley Angela Costa Maia Ghassan El-Baalbaki Carolyn Ells Cornelia Van Den Ende Kim Fligelstone Catherine Fortune Tracy Frech Dominique Godard Daphna Harel Marie Hudson Ann Impens Yeona Jang Sindhu R Johnson Ann Tyrell Kennedy Annett Körner Maggie Larche Catarina Leite Carlo Marra Karen Nielsen Janet Pope Alexandra Portales Tatiana Sofia Rodriguez Reyna Anne A Schouffoer Russell J Steele Maria E Suarez-Almazor Joep Welling Durhane Wong-Rieger Christian Agard Alexandra Albert Marc André Guylaine Arsenault Nouria Benmostefa Ilham Benzida Sabine Berthier Lyne Bissonnette Gilles Boire Alessandra Bruns Patricia Carreira Marion Casadevall Benjamin Chaigne Lorinda Chung Pascal Cohen Pierre Dagenais Christopher Denton Robyn Domsic James V Dunne Dominique Farge-Bancel Paul Fortin Anna Gill Jessica Gordon Brigitte Granel-Rey Claire Grange Genevieve Gyger Eric Hachulla Pierre-Yves Hatron Ariane L Herrick Adrian Hij Monique Hinchcliff Alena Ikic Niall Jones Artur Jose De B Fernandes Suzanne Kafaja Nader Khalidi Benjamin Korman Marc Lambert David Launay Patrick Liang Jonathan London Joanne Manning Thierry Martin Ariel Masetto Arsene Mekinian Romain Paule Alexis Regent Sébastien Rivière David Robinson Sophie Roux Perrine Smets Doug Smith Vincent Sobanski Robert Spiera Virginia Steen Evelyn Sutton Benjamin Terrier Carter Thorne John Varga Pearce Wilcox Vanessa C Delisle Brooke Levis Mia R Pepin