Nisha Patel, Grace W. Conley, Laura A. McElroy, and Majed A. Refaai. 2016. “ Isolated Prolonged Activated Partial Thromboplastin Time and Contact Factor Deficiencies: Case Series and Management Review”. Research and Practice in Anesthesiology 1 (1):19-23. https://doi.org/10.17140/RPAOJ-1-105.