Ratnawat, Anil, and Vijay Kumar. 2019. “Small Dose-Clonidine Prolongs Postoperative Analgesia After Sciatic-Femoral Nerve Block With 0.75% Rovpivacaine for Foot Surgery”. Academia Anesthesiologica International 4 (2), 17-20. https://doi.org/10.21276/aan.2019.4.2.5.