Efek pemberian asam askorbat intravena pada pasien sepsis dan syok sepsis terhadap fungsi ginjal: kadar urin neutrophil gelatinase associated lipocalin (uNGAL), produksi urin dan balans kumulatif = Effect of intravenous ascorbic acid among septic patients on kidney function: urine neutrophil gelatinase associated lipocalin (uNGAL), urine output, cumulative fluid balance