Significantly Prolonged Prothrombin Time and Activated Partial Thromboplastin Time with no Bleeding Tendency: A Patient with Lupus Anticoagulant–Hypoprothrombinemia Syndrome Positive for Immunoglobulin M Anti-Phosphatidylserine/Prothrombin complex Antibodies - Fei, Yang; Tang, Ning; Zhang, Hui; Li, Guo; Zhang, Hongbo; Zhang, Chi (Seminars in Thrombosis and Hemostasis, 2020)