Saleh, Raisa, et al. “OSTEITIS CONDENSANS ILII: AN UNUSUAL CASE OF SEVERE BACK PAIN DURING PREGNANCY”. Journal of Ayub Medical College Abbottabad, vol. 33, no. 1, Feb. 2021, pp. 169-71, https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/8441.