Zhang J, Zhu C, Yan L, Wang Y, et al. Comparing levonorgestrel intrauterine system versus hysteroscopic niche resection
in women with postmenstrual spotting related to a niche in the uterine cesarean
scar: a randomized, open label, controlled trial. Am J Obstet Gynecol 2023 Mar 17:S0002-9378(23)00167.
PMID: 36935068