Fig. 1From: Is early bilateral compression ultrasonography and D-dimer monitoring appropriately for prophylaxis and diagnosis of deep venous thrombosis after cesarean section women: a single-center observation study of Chinese Han population Flow chart. Note RCOG scores ≥ 4 (N = 109); RCOG scores 2–3 (N = 470); RCOG scores ≤ 1 (N = 163); H: highrisk;M:medium risk;L:low riskBack to article page