Ashraf-Khorasani, M. et al. 2019. knowledge, Attitude and Practice of Rational usage of antibiotics for Preoperative Prophylaxis Among Surgeons in Shahid Beheshti University of Medical Sciences hospitals in 2014. Student Research in Translational Medicine. 1, 1 (Dec. 2019), 9–12. DOI:https://doi.org/10.22037/smsj.v1i1.28322.