Abdolkarimi, B., S. Zareifar, M. Golestani Eraghi, and F. Saleh. “Comparison Effect of Intravenous Ketamine With Pethidine for Analgesia and Sedation During Bone Marrow Procedures in Oncologic Children: A Randomized, Double-Blinded, Crossover Trial”. International Journal of Hematology-Oncology and Stem Cell Research, Vol. 10, no. 4, Oct. 2016, pp. 206-11, http://ijhoscr.tums.ac.ir/index.php/ijhoscr/article/view/510.