Giri, Saroj, S Chaudhuri, S Jirel, BD Aryal, DR Kumar, and PP Gupta. 2017. “Pre Operative Use of Injection Diclofenac Versus Injection Tramadol for Pain Management of Acute Appendicitis in Emergency Department”. Health Renaissance 13 (1):40-48. https://doi.org/10.3126/hren.v13i1.17946.