Hansen AT, Schmidt M, Horváth-Puhó E, Pedersen L, Rothman KJ, Hvas A, Sørensen HT. Preconception venous thromboembolism and placenta-mediated pregnancy complications. J Thromb Haemost. 2015 Sep 1;13(9):1635-41. doi: 10.1111/jth.13046
Rothman KJ. Epidemiology at 25 years. Epidemiology. 2015 Jan;26(1):1-3. doi: 10.1097/EDE.0000000000000214