Department of Fetomaternal Medicine, University of Nottingham, and Queen's Medical Centre, Nottingham, United Kingdom
Financial Disclosure: Drs. James, Steer, Weiner, Gonik, and Ramsay received royalties from Elsevier as editors for High-Risk Pregnancy: Management Options and for the associated monograph on pregnancy laboratory values. Dr. Steer received money from various lawyers and hospital trusts for advising them about the normal ranges of various measurements in pregnancy; he is Editor-in-Chief of BJOG-An International Journal of Obstetrics and Gynaecology. The other authors did not report any potential conflicts of interest.