First Latin American clinical practice guidelines for the treatment of systemic lupus erythematosus: Latin American Group for the Study of Lupus (GLADEL, Grupo Latino Americano de Estudio del Lupus)-Pan-American League of Associations of Rheumatology (PANLAR) - Pons-estel, Bernardo A.; Bonfá, Eloísa Silva Dutra de Oliveira; Silva, Clovis Artur Almeida da; Borba Neto, Eduardo Ferreira (Annals of the rheumatic diseases, 2018)