Zutshi, Vijay, Monika Gupta, Panchampreet Kaur, Aarzoo Malik, Sufian Zaheer, and Puneet Gambhir. “Office Endometrial Sampling: A Comparison Between Endosampler and Karman Cannula Number 4”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 10 (September 26, 2018): 3965–3968. Accessed October 2, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/5582.