Development of an application for mobile phones (App) based on the collaboration between the Spanish Society of Rheumatology and Spanish Society of Family Medicine for the referral of systemic autoimmune diseases from primary care to rheumatology Ana Urruticoechea-Arana; Fernando León-Vázquez; Vicente Giner-Ruiz; José Luis Andréu-Sánchez; Alejandro Olivé-Marqués; Mercedes Freire-González; José María Pego-Reigosa; Santiago Muñoz-Fernández; José A. Román-Ivorra; Juan José Alegre-Sancho; Francisco Vargas-Negrín; María Medina-Abellán; Tatiana Cobo-Ibáñez; Xavier Mas-Garriga; Jaime Calvo-Alén; Carmen Costa-Ribas; Ricardo Blanco-Vela; Álvaro Pérez-Martín; Emma Beltrán-Catalán; Jordi Forcada-Gisbert; María Victoria Hernández-Miguel; Juan Carlos Hermosa-Hernán; Javier Narváez-García; Enrique Nieto-Pol; Íñigo Rúa-Figueroa;

Evaluation of serum IgG4 levels as a screening tool for IgG4-related disease: Data from a retrospective study Pablo Martínez Calabuig; Jorge Juan Fragío Gil; Roxana González Mazarío; Laura Salvador Maicas; Mireia Lucía Sanmartín Martínez; Antonio Sierra Rivera; Laura Abenza Barberá; María Cristina Sabater Abad; Francesc Puchades Gimeno; Inmaculada Castelló Miralles; Amalia Rueda Cid; Cristina Campos Fernández;

A detailed quantitative analysis of circulating T peripheral and follicular helper lymphocytes in patients with rheumatoid arthritis and systemic lupus erythematosus Raquel Sánchez-Gutiérrez; Marlen Vitales-Noyola; Larisa González-Baranda; Diana P. Portales-Pérez; Esther Layseca-Espinosa; Mariana H. García-Hernández; Roberto González-Amaro;