M. S. Malla, S. Ashraf, A. Taj, and R. A. Bhat, “Postoperative analgesic effectiveness and opioid sparing effect of ultrasound guided transverse abdominis plane block in total abdominal hysterectomy under general anesthesia”, Asian J Med Sci, vol. 12, no. 9, pp. 116–119, Sep. 2021.