IgA vasculitis with nephritis (Henoch-Schönlein purpura) after COVID-19: A case series and review of the literature Irene Oñate; Milagros Ortiz; Andrea Suso; Carmen Mon; Karen Galindo; Carolina Lentisco; Rosa Camacho; María Sánchez; Aniana Oliet; Olimpia Ortega; Juan C. Herrero; José A. Cortés; Alejandro Pascual;

Multicenter validation of the Kidney Failure Risk Equation (KFRE) formula in Spanish patients with advanced chronic kidney disease Beatriz Escamilla-Cabrera; Marco Montomoli; Maria Kislikova; Verónica de la Espada; Alazne Olarte-García; Ana María García-Prieto; Sara Piqueras-Sánchez; Álvaro Álvarez López; Lucía Rodríguez-Gayo; Javier Centellas-Pérez; Hilda Villafuerte; Pedro Barrera Baena;

Improvement in the detection, diagnosis, and early treatment of chronic kidney disease in Spain. The IntERKit project José Luis Górriz; Fran Adán Gil; Manuel A. Botana López; Antonio Buño Soto; Francisco José Campos Cabrera; Angeles Cisneros; Silvia Cobo Guerrero; María Dolores Conejos; Isabel Egocheaga Cabello; M. Concepción Fernández Planelles; Lisardo García-Matarín; Natalia Jiménez; Juan Carlos Julián Mauro; David León Jiménez; Daniel Martínez Gamote; Pilar Mazón Ramos; Alberto Ortiz; Gemma Palau; Julia Quevedo Rivera; J. Emilio Sánchez-Álvarez; Rita Tristancho Ajamil; Cristina Varga Martín; Roser Vallés Fernández;