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;

Clinical and sociodemographic factors associated with lupus nephritis in Colombian patients: A cross-sectional study Juan C. Díaz-Coronado; Adriana Rojas-Villarraga; Deicy Hernandez-Parra; Laura Betancur-Vásquez; Jorge Lacouture-Fierro; Daniel Gonzalez-Hurtado; Juanita González-Arango; Laura Uribe-Arango; Maria C. Gaviria-Aguilar; Ricardo A. Pineda-Tamayo;

Hypertrophic pachymeningitis due to IgG4-related disease (RD-IgG4). A case report Paira Sergio; Reibaldi Alejandro; Froullet Cristian;