Swarnali Biswas, Mallika Sengupta, Debdatta Ghosh, and R. D. Rajesh, “Induction of abortion in the first trimester of pregnancy using letrozole and misoprostol combination versus misoprostol alone - A comparative observational study”, Asian J Med Sci, vol. 15, no. 1, pp. 94–101, Jan. 2024.