Indrasena, B. S. H., Ghahramani, L., Hosseini, S. V., Rahimikazerooni, S., Bananzadeh, A. M., Namavar Jahromi, B., Samsam, A., Rezaeian Zadeh, A., Safarpour, A. R., Bagherpour Jahromi, A., & Banihashemi, S. H. "The Effect of Oral Psyllium Herbal Laxative Powder in Prevention of Hemorrhoids and Anal Fissure during Pregnancy, a Randomized Double Blind Clinical Trial", Iranian Journal of Colorectal Research, 1, 3, 2013, 2–7. doi: 10.17795/acr-11488