Distribution and characteristics of the certification of rheumatologists in Mexico Everardo Álvarez-Hernández; Eduardo Barreira-Mercado; Hilda E. Fragoso-Loyo; Cristina Hernández-Díaz; Blanca Mota-Mondragón; Sandra Muñoz-López; Mario Pérez-Cristóbal; Nadina Rubio-Pérez; Alfonso Torres-Jiménez; Angélica Vargas Guerrero; Mónica Vázquez del Mercado; Miguel Ángel Villarreal-Alarcón; César Pacheco-Tena; Deshiré Alpízar-Rodríguez;

The reality of Rheumatology in Spain and its autonomous communities before the pandemic Carlos Sánchez-Piedra; José María Álvaro-Gracia; Sagrario Bustabad-Reyes; Federico Díaz-González;

Hospitalization and mortality from COVID-19 of patients with rheumatic inflammatory diseases in Andalusia Natalia Mena-Vázquez; Sara Manrique Arija; Marta Rojas-Giménez; Enrique Raya-ÿlvarez; María Luisa Velloso-Feijoó; C. López-Medina; Consuelo Ramos-Giraldez; Francisco Javier Godoy-Navarrete; Rocío Redondo-Rodríguez; Alba María Cabezas-Lucena; M. Morales-ÿguila; C.M. Romero-Barco; Antonio Fernández-Nebro;