marginally significantP < 0.001
In multivariate regression analysis, marginally significant positive relationships were found between serum indium and urine indium levels ( P < 0.001), SP-A levels ( P = 0.037), IL-1β levels ( P = 0.043), IL-6 levels ( P = 0.008), PDW levels ( P = 0.029), TP levels ( P = 0.017).