Erratum: Gain-of-function mutations in complement factor B are associated with atypical hemolytic uremic syndrome (Proceeding of the National Academy of Science of the United States of America (January 2007) 104, (240-245)) - De Jorge E; Harris C; Esparza-Gordillo J; Carreras L; Arranz E; Garrido C; López-Trascasa M; Sánchez-Corral P; Morgan B; De Córdoba S (Proceedings Of The National Academy Of Sciences Of The United States Of America, 2007)