GlycA, a marker of protein glycosylation, is related to albuminuria and estimated glomerular filtration rate: the ELSA-Brasil study - Titan, Silvia M.; Pecoits Filho, Roberto; Barreto, Sandhi M; Lopes, Antônio Alberto; Benseñor, Isabela Judith Martins; Lotufo, Paulo Andrade (Bmc nephrology, 2017)