Boraas CM, Sanders JN, Schwarz EB, Thompson I, et al. Risk of Pregnancy With Levonorgestrel-Releasing Intrauterine System Placement 6-14 Days After Unprotected Sexual Intercourse. Obstet Gynecol 2021 Mar 10. pii: 00006250-990000000-00136.
PMID: 33706343