1. Sutton P, Mathews T. Trends in characteristics of births by State: United States, 1990, 1995, and 2000–2002. Natl Vital Stat Rep. 2004;52(19):1–152.
2. National Cancer Institute.
http://www.cancer.gov/cancertopics/aya/types
3. Shivvers S, Miller D. Preinvasive and invasive breast and cervical cancer prior to or during pregnancy. Clin Perinatol. 1997;24(2):369–89.
4. Hacker N, Berek J, Lagasse L, Charles E, Savage E, Moore J. Carcinoma of the cervix associated with pregnancy. Obstet Gynecol. 1982;59(6):735–46.
5. Creasy RK, Resnick R, Iams JD. Creasy and Resnick’s maternal-fetal medicine: principles and practice. 6th ed. Philadelphia: Elsevier; 2009. p. 891.