NPPB and diabetes mellitus: We found that P-ETP had a very weak positive association with age (rho = 0.12, p < 0.0001), diabetes duration (rho = 0.15, p < 0.0001), BMI (rho = 0.17, p < 0.0001), HbA1c (rho = 0.06, p = 0.0005), NTproBNP (rho = 0.22, p < 0.0001), and ACR (rho = 0.13, p < 0.0001).