Consensus document of the Spanish Group for the Study of the Glomerular Diseases (GLOSEN) for the diagnosis and treatment of lupus nephritis Jorge E. Rojas-Rivera; Clara García-Carro; Ana I. Ávila; Mar Espino; Mario Espinosa; Gema Fernández-Juárez; Xavier Fulladosa; Marian Goicoechea; Manuel Macía; Enrique Morales; Luis F. Quintana Porras; Manuel Praga;