Ozolina, Agnese, et al. “Coagulation Tests and Their Association With Postoperative Blood Loss After Cardiac Surgery With Cardiopulmonary Bypass”. Acta Medica Lituanica, vol. 19, no. 3, Oct. 2012, pp. 166-71, https://doi.org/10.6001/actamedica.v19i3.2442.