Analysis of the association between CD40 and CD40 ligand polymorphisms and systemic sclerosis

¹ Instituto de Parasitología y Biomedicina López-Neyra, IPBLN-CSIC, Avda. del Conocimiento s/n. 18010, Granada, SpainArmilla (Granada), Spain

² Department of Internal Medicine, Hospital Valle de Hebron, Passeig de la Vall d'Hebron 119 08035 Barcelona, Spain

³ Department of Rheumatology, Radboud University Nijmegen Medical Centre, Comeniuslaan 4 6525 HP Nijmegen, The Netherlands

⁴ Department of Rheumatology, Hospital 12 de Octubre, Avda. de Córdoba s/n 28041, Madrid, Spain

⁵ Department of Internal Medicine, Hospital Carlos Haya, Avda Carlos Haya s/n 29010 Málaga, Spain

⁶ Department of Rheumatology, Hospital Virgen de la Victoria, Campus de Teatinos s/n 29010 Málaga, Spain

⁷ Department of Rheumatology, Hospital Universitario de Canarias, Ctra. Cuesta-Taco, s/n 38320, La Cuesta, San Cristóbal de La Laguna, Tenerife, Canarias, Spain

⁸ Department of Internal Medicine, Hospital Central de Asturias, Celestino Villamil, s/n 33006 Oviedo, Spain

⁹ Department of Autoimmune Diseases, Hospital Clinic, Carrer de Villarroel, 170 08036 Barcelona, Spain

¹⁰ See Acknowledgements

¹¹ Referral Center for Systemic Autoimmune Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Via Francesco Sforza, 35 20122 and University of Milan, Via Festa del Perdono, 7 20122, Milan, Italy

¹² Rheumatology Unit and Chair, Spedali Civili, Università degli Studi, Piazzale Spedali Civili, 1 25123 Brescia, Italy

¹³ Department of Medicine, Policlinico GB Rossi, Università degli studi di Verona, Via dell'Artigliere, 8 37129 Verona, Italy

¹⁴ Department of Rheumatology and Clinical Immunology, Charité University Hospital and German Rheumatism Research Centre, a Leibniz Institute, Charitéplatz 1, 10117 Berlin, Germany

¹⁵ Clinic for Immunology and Rheumatology Medical School, Carl-Neuberg-Str, 1 30625, Hannover, Germany

¹⁶ Department of Dermatology, University of Cologne, Kerpener Str 62, 50924 Köln, Germany

¹⁷ Department of Dermatology, Allergology, and Venereology, Ruhr University of Bochum, Stiepeler Straße 129 44801 Bochum, Germany

¹⁸ Department of Internal Medicine 3, Institute for Clinical Immunology, University of Erlangen-Nuremberg, Schillerstraße 1 91054, Erlangen, Germany

¹⁹ Section Complex Genetics, Department of Medical Genetics, University Medical Center Utrecht, Universiteitsweg Stratenum 3508 AB, Utrecht, The Netherlands

²⁰ Department of Rheumatology, VU University Medical Center, De Boelelaan 1117 1081 HZ Amsterdam, The Netherlands

²¹ Department of Rheumatology, Leiden University Medical Center, Albinusdreef 2 2300 RC, Leiden, The Netherlands

²² Department of Rheumatology, Hospital Universitario Marques de Valdecilla, IFIMAV, Avda. Valdecilla, 25, 39008 Santander, Spain

²³ Department of Rheumatology and Clinical Immunology, University Utrecht Medical Center, Universiteitsweg 100 Stratenum 3508 AB, Utrecht, The Netherlands