Rauf, Raazia, et al. “OUTPATIENT ENDOMETRIAL BIOPSY WITH PIPELLE Vs DIAGNOSTIC DILATATION AND CURETTAGE”. Journal of Ayub Medical College Abbottabad, vol. 26, no. 2, June 2014, pp. 145-8, https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/1538.