A Case Report of a Paroxysmal Nocturnal Hemoglobinuria with Increased Coagulation Activation Markers while on Treatment with LMWH with Anti-Xa Levels above the Therapeutic Range - Arkel, Yale S.; Ku, De-Hui W.; Lake, Cathryn; Lam, Xuan; Spielvogel, Arthur (Thrombosis and Haemostasis, 2000)