3) Bates SM, Greer IA, Pabinger I, et al : Venous thromboembolism, thrombophilia, antithrombotic therapy, and pregnancy : American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Chest 2008 ; 133(6 Suppl): 844S-886S
4) Bates SM, Greer IA, Hirsh J, Ginsberg JS : Use of antithrombotic agents during pregnancy : the Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy. Chest 2004 ; 126(3 Suppl): 627S-644S