Batool, Azra, et al. “A COMPARISON OF TWO PROTOCOLS OF INTRAVAGINAL MISOPROSTOL FOR SECOND TRIMESTER MEDICAL TERMINATION OF PREGNANCY: Intravaginal Misoprostol”. Pakistan Armed Forces Medical Journal, vol. 57, no. 1, June 2007, pp. 61-65, https://pafmj.org/PAFMJ/article/view/249.